PickSmartly Review

Best Ester C Vitamin C Supplements in 2026

9.9 PM Score
Products Evaluated
76
Reviews Analyzed
77,057
Brands Ranked
10
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When it comes to immune support and collagen synthesis, Vitamin C is a non-negotiable staple. However, many traditional ascorbic acid supplements come with a significant drawback: high acidity. This acidity can trigger heartburn, nausea, and digestive discomfort, especially for those with sensitive stomachs. This is where Ester C enters the conversation. As a buffered form of Vitamin C, Ester C is designed to be gentler on the digestive tract while providing a unique physiological advantage: a higher blood concentration level for a longer duration compared to standard ascorbic acid. Choosing the right Ester C supplement requires looking beyond just the milligram count to understand bioavailability, purity, and the specific delivery methods that maximize its cellular uptake.

Editor's Choice

Our Top Picks for Ester C Vitamin C Supplements

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

Nature's Bounty Vitamin C, Immune Support, 500mg, Capsules, 100 Ct

Nature's Bounty Vitamin C Immune Support Capsules

4.7 (12,337 ratings)
NATURE'S BOUNTY B001G7QWJ4 2.10 X 2.10 X 4.25 Inches 0.22 Pounds

Reviews for NATURE'S BOUNTY (PM Score)

9.9 PM Score
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  • IMMUNE SUPPORT: 100-count, 500mg Vitamin C Capsules for immune support.(1) Vitamin C is one of the leading nutritional vitamins for immune support.(1) People reach for Vitamin C by Nature’s Bounty to help them maintain a healthy immune system all year long.(1)
  • NOURISHES THE IMMUNE SYSTEM: Nature’s Bounty Vitamin C Capsules play an important role in the functioning of white blood cells, which are vital components of the immune system.(1)
  • POTENT ANTIOXIDANT: Nature’s Bounty Vitamin C Capsules also support antioxidant health.(1) Vitamin C is one of the best antioxidants for fighting the free radicals.(1) Free radicals can cause oxidative stress that may lead to premature aging of the cells.(1)
  • PURITY IS OUR PRIORITY: Nature’s Bounty is committed to safety and purity in all our supplements. Our Vitamin C Capsules are non-GMO, and gluten-free, and contain no artificial colors, or sweeteners.
  • FROM THE TRUSTED WELLNESS EXPERTS: Nature’s Bounty Vitamin C supplements are a product of 50 years of dedication to quality, consistency and scientific research to make vitamins and nutritional supplements of unrivaled excellence.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Can a single daily supplement truly serve as your first line of defense against seasonal wellness challenges? Nature's Bounty Vitamin C capsules provide a reliable, 500mg dose designed to nourish your white blood cells and keep your immune system functioning optimally year-round. Beyond simple immune support, these capsules act as a potent antioxidant to combat free radicals and reduce the oxidative stress that leads to premature cell aging. I appreciate that this brand prioritizes purity, offering a non-GMO and gluten-free formula that completely avoids artificial colors or sweeteners. With five decades of research behind their formulations, these capsules feel like a trusted staple for anyone looking to maintain their health through scientifically backed nutritional support.

What We Like
500mg Vitamin C
Immune system support
Potent antioxidant
Non-GMO formula
Gluten-free

Nutrivein Liposomal Vitamin C 1650mg - 180 Capsules - High Absorption Ascorbic Acid - Supports Immune System & Collagen Booster - Powerful Antioxidant

Nutrivein Liposomal Vitamin C High Absorption Capsules

4.7 (20,139 ratings)
NUTRIVEIN VEIN-1101 4.00 X 2.00 X 4.00 Inches

Reviews for NUTRIVEIN (PM Score)

9.9 PM Score
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  • ✔ Highest Available Vitamin C Formula – Nutrivein Liposomal Vitamin C enhanced formula contains 1650 mg of Liposomal Vitamin C per serving. With 180 vegetable capsules in each bottle for a full 90 day supply, our brand boasts the highest leading potency of Liposomal Vitamin C found on the market today. Utilizing the phospholipid sunflower lecithin to create liposomes helps the body more effectively absorb the vitamin C in our complex. Phosphatidylcholine helps to ensure superior absorption.
  • ✔ Immune System Support & Fat Soluble Vitamin C – Our vitamin c supplement is supportive of the immune system. Avoid having to take sick days off from work by taking these pills daily as a defense against getting sick. Our powerful combination of sunflower phospholipids (building blocks of cell membranes) and Vitamin C, creates the best antioxidant supplements that neutralize harmful free radicals caused by stress.
  • ✔ Groundbreaking Health Benefits - Vitamin C (ascorbic acid) contains powerful antioxidant properties & helps protect against free radical damage. It supports the immune system, supports healthy brain function & cognition, supports blood circulation, helps improve mood, contains anti-aging properties such as minimizing wrinkles, supports bone density, helps decrease muscle soreness, and helps increase absorption of calcium & iron.
  • ✔ Healthy Lifestyle – Our advanced Liposomal Vit C formula is non-gmo, soy-free, gluten-free and dairy-free and is a Vitamin C formula based on Liposomal technology. It uses ascorbic acid & palmitic acid to create Ascorbyl palmitate (fat-soluble form of Vitamin C). When combined with a phospholipid such as sunflower lecithin (which is also part of the formula), the capsule creates a liposomal environment which allows for exceptional absorption and better health benefits.
  • ✔ Trusted Brand - Satisfaction Assured: If our Liposomal C Supplements do not bring noticeable value to you and you don't absolutely love them, your purchase is on us. No Questions Asked. Our world-class customer service wants you to be satisfied with your purchase. Absolutely no risk. The bottle comes with the Nutrivein Satisfaction Pledge for 30 days. Have this supplement and health protector by your side
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Nutrivein 9.89 Yes Yes Yes

You are staring at a mounting pile of deadlines and a seasonal flu going around the office, praying your immune system holds the line. Nutrivein’s Liposomal Vitamin C is designed for exactly those high-stakes moments when you can't afford a sick day. Unlike standard ascorbic acid, this formula utilizes sunflower lecithin and phosphatidylcholine to create a liposomal environment, which significantly boosts how effectively your body absorbs the nutrients. At 1650mg per serving, it is a heavy-hitting antioxidant that supports everything from collagen production and skin elasticity to bone density and iron absorption. It is a clean, non-GMO, and soy-free option that fits easily into a daily wellness routine for ninety days straight.

What We Like
High absorption technology
1650mg per serving
Sunflower lecithin base
90-day supply
Non-GMO formula

Nature Made Vitamin C 1000 mg, Dietary Supplement for Immune Support, 100 Tablets, 100 Day Supply

Nature Made Vitamin C 1000 mg Immune Support Tablets

4.7 (16,826 ratings)
NATURE MADE 1489 2.40 X 2.40 X 4.53 Inches

Reviews for NATURE MADE (PM Score)

9.9 PM Score
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  • Immune support supplement: contains one 100 count bottle of Nature Made Vitamin C 1000 mg Tablets for a 100-day supply
  • These Nature Made Vitamin C 1000mg tablets are Vitamin C supplements that help support immune health and provide antioxidant support
  • Vitamin C is necessary for the body to produce collagen, which helps support healthy skin
  • Adults take one of these 1000mg Vitamin C tablets daily with water and a meal
  • This Vitamin C for adults antioxidant supplement has no color added, no artificial flavors, no added preservatives and is gluten free
  • United States Pharmacopeia (USP) Verified, #1 Pharmacist Recommended Vitamin & Supplement Brand
  • These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Maintaining a consistent wellness routine during a hectic work week often means relying on high-quality, reliable staples like these Nature Made Vitamin C tablets. I found that taking just one 1000 mg tablet daily with a meal makes it incredibly easy to stay on top of immune and antioxidant support. What really sets this supplement apart for me is the USP Verification, which provides a level of professional confidence you don't always find in the drugstore aisle. Beyond just immune health, the connection to collagen production makes it a dual-purpose win for skin health. It is a clean formula with no artificial flavors, colors, or preservatives, and since it is gluten-free, it fits seamlessly into almost any dietary lifestyle without any unnecessary additives.

What We Like
1000 mg dosage
USP Verified
Antioxidant support
Gluten free
No artificial flavors

Solgar Ester-C Plus 500 mg Vitamin C (Ascorbate Complex) - Gentle & Non Acidic - Antioxidant & Immune Support - 100 Vegetable Capsules (100 Servings)

Solgar Ester-C Plus Vitamin C Ascorbate Complex

4.8 (3,691 ratings)
SOLGAR 30152 2.42 X 2.42 X 4.31 Inches 0.50 Pounds

Reviews for SOLGAR (PM Score)

9.9 PM Score
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  • Well-Retained. The Vitamin C metabolites in Ester-C positively impact retention of Vitamin C in cells. This complex yields beneficial antioxidant and immune system support. Includes natural bioflavonoids, acerola berry, and rose hips fruit powder
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Unique Formula. Special manufacturing process creates a unique calcium ascorbate metabolite complex. Less acidic, pH neutral Vitamin C for sensitive stomachs. Easy to digest, highly-absorbable
  • Immune Support & More. Solgar Ester-C Plus 500 mg Vitamin C Vegetable Capsules also contribute to collagen formation for healthy skin and cartilage. Increases iron absorption
  • Non-GMO, Vegan, Kosher, Halal & Gluten Free. Solgar Ester C Vegetable Capsules with 500 mg of Vitamin C are free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, and color
  • The Gold Standard: For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Solgar Ester-C Plus stands out as a premier choice for anyone who struggles with the stomach acidity often found in standard Vitamin C supplements. By utilizing a unique calcium ascorbate metabolite complex, this formula maintains a pH-neutral profile that is incredibly gentle on sensitive digestive systems. I was particularly impressed by the inclusion of acerola berry and rose hips, which elevate the antioxidant profile beyond basic ascorbic acid. It doesn't just support your immune system. It also aids in collagen formation for skin health and helps boost iron absorption. Because it is designed for better cellular retention, you are actually getting more value out of every dose. It is a clean, vegan-friendly option that feels like a true gold standard in daily wellness.

What We Like
Non-acidic formula
Enhanced cellular retention
Includes rose hips
Supports collagen formation
Vegan and gluten-free

American Health Ester-C With Citrus Bioflavonoids Capsules - 24-Hour Immune Support, Gentle On Stomach, Non-Acidic Vitamin C - Non-GMO, Gluten-Free -...

American Health Ester-C Vitamin C with Citrus Bioflavonoids

4.8 (4,844 ratings)
ESTER-C 076630169752 6.00 X 6.00 X 6.00 Inches 0.40 Pounds

Reviews for ESTER-C (PM Score)

9.9 PM Score
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  • 24-Hour Immune Support. Ester-C delivers 24-hour immune support, so one daily serving of 1000 mg is all you need. As a potent antioxidant, it helps fight free radicals, which can cause oxidative stress that may lead to the premature aging of cells
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Gentle On The Stomach. Ester-C's water-based manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach
  • Optimal Absorption. Added citrus bioflavonoids may help your body better absorb and utilize Vitamin C
  • Naturally-Occurring Metabolites. The naturally-occurring metabolites in Ester-C may help enhance the retention of Vitamin C in your white blood cells, an important part of your immune system
  • "Suitable For Vegetarians & Vegans. No gluten, no yeast, no wheat, milk or milk derivatives, no lactose, no soy, no egg, no grapefruit, no sugar, no artificial flavors, no sodium. Non-GMO "
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Wiki Deals 9.98 Yes Yes Yes

American Health Ester-C provides a continuous 24-hour immune shield that makes a single daily dose incredibly efficient. What sets this supplement apart from standard ascorbic acid is the water-based manufacturing process that neutralizes pH levels, ensuring it remains non-acidic and exceptionally gentle on your stomach. I found the inclusion of citrus bioflavonoids particularly smart, as they assist with optimal absorption and utilization. Because it utilizes naturally-occurring metabolites, the formula helps retain Vitamin C within your white blood cells for better immune support. It is a potent antioxidant that fights free radicals and oxidative stress, all while staying strictly non-GMO and free from common allergens like gluten, soy, and dairy. It is a reliable, high-potency staple for anyone prioritizing long-term cellular health.

What We Like
24-hour immune support
Non-acidic formula
Gentle on stomach
Citrus bioflavonoids included
Vegan and gluten-free

ForestLeaf Liposomal Vitamin C - Liposomal VIT C - 1000mg Capsules - High Potency Immune Booster with MCT Oil & Sunflower Lecithin - Superior Absorpti...

ForestLeaf Liposomal Vitamin C 1000mg Capsules

4.8 (1,512 ratings)
FORESTLEAF 67582

Reviews for FORESTLEAF (PM Score)

9.9 PM Score
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  • The Ultimate Immune System Booster - Boost your immunity with ForestLeaf liposomal Vitamin C capsules. Forestleaf vitamin c capsules blend the powerful benefits of MCT oil and sunflower lecithin with dry vitamin c liposomal technology for maximum absorption.
  • Loaded with Vitamin C - Support your body year-round with our maximum potency vitamin c liposomal 1000mg. Just two capsules of Forestleaf liposomal vitamin c 1000mg a day help protect your body against harmful symptomatic and asymptomatic illness
  • Ditch Harmful Additives - Ask our thousands of happy customers how much they trust ForestLeaf vit c liposomal. ForestLeaf liposomal c is non-GMO, free of sugar, gluten, dairy, nuts, and soy, and preservative free. 120 vegetable capsules.
  • Protect Against Deficiencies - Bolster immunity, promote collagen production, and boost your liposomal vit c intake to avoid joint pain, weak bones, fatigue, and weight gain. Our vit c vegetable softgels contain 1000 mg. Recommended Dose: 2 per day with food.
  • Supplement Your Health - We offer the highest quality ingredients made in the USA. Forestleaf high dose vitamin c is third-party laboratory tested and independently verified for potency and absorption. Our vitamin c softgels are made in a GMP compliant, UL certified facility.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
FOREST LEAF 9.95 Yes Yes Yes

After weeks of use, the difference in my daily energy and immune resilience has been impossible to ignore. Most standard supplements just pass through your system, but ForestLeaf utilizes liposomal technology by blending MCT oil and sunflower lecithin to ensure the 1000mg dose actually gets absorbed. I take two veggie capsules daily with food to support collagen production and ward off that sluggish, fatigued feeling. It is a relief to find a high-potency formula that avoids the usual suspects like sugar, gluten, dairy, and soy. Since these are third-party laboratory tested and made in a GMP-compliant facility in the USA, I feel completely confident about the purity and potency of every dose.

What We Like
Liposomal absorption technology
MCT oil blend
Sunflower lecithin included
Non-GMO ingredients
High potency dose

American Health Ester-C with Citrus Bioflavonoids Capsules - Gentle On Stomach, Non-Acidic Vitamin C - 500 mg, 60 Servings, 120 Count

American Health Ester-C Vitamin C with Citrus Bioflavonoids

4.8 (2,244 ratings)
ESTER-C 16961 5.00 X 5.00 X 5.00 Inches 0.36 Pounds

Reviews for ESTER-C (PM Score)

9.9 PM Score
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  • 24-Hour Immune Support. Ester-C delivers 24-hour immune support, so one daily serving of 1000 mg is all you need. As a potent antioxidant, it helps fight free radicals, which can cause oxidative stress that may lead to the premature aging of cells
  • Gentle On The Stomach. Ester-C's water-based manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach
  • Optimal Absorption. Added citrus bioflavonoids may help your body better absorb and utilize Vitamin C
  • Naturally-Occurring Metabolites. The naturally-occurring metabolites in Ester-C may help enhance the retention of Vitamin C in your white blood cells, an important part of your immune system
  • No gluten, no yeast, no wheat, no milk or milk derivatives, no lactose, no soy, no egg, no grapefruit, no sugar, no artificial flavors, no sodium. Non-GMO
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HHG INC 9.90 Yes Yes Yes

Sensitive stomachs are the primary reason you should switch to Ester-C for your daily immune defense. Unlike standard ascorbic acid supplements that can cause significant gastric discomfort, this formula uses a water-based manufacturing process to neutralize pH, making it non-acidic and much gentler on your digestive tract. I found the addition of citrus bioflavonoids particularly smart because they assist with optimal absorption. Because it contains naturally-occurring metabolites, it helps your body retain Vitamin C within your white blood cells for sustained support. You only need one daily serving of 1000 mg to get 24-hour antioxidant protection against oxidative stress. It is also a very clean option, being non-GMO and free from common allergens like gluten, soy, and dairy.

What We Like
Non-acidic formula
24-hour immune support
Enhanced absorption
Gentle on stomach
Naturally-occurring metabolites

Ester-C® 500 mg with Citrus Bioflavonoids Veg. Tablets 90

American Health Ester-C Vitamin C with Citrus Bioflavonoids

4.7 (1,053 ratings)
AMERICAN HEALTH 044610 4.00 X 3.00 X 2.00 Inches 0.25 Pounds

Reviews for AMERICAN HEALTH (PM Score)

9.8 PM Score
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  • 24-Hour Immune Support
  • Gentle on the Stomach, 100% Vegetarian
  • Take Once Daily, Patented Vitamin C Formula
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

A noticeable absence of that harsh, acidic burn makes these tablets a total game-changer for anyone who usually struggles with standard vitamin supplements. I found that the patented Ester-C formula provides a smooth experience because it is specifically designed to be gentle on the stomach. You only need to take one tablet daily to tap into its 24-hour immune support, which makes staying consistent with your wellness routine incredibly easy. Since these are 100% vegetarian, they fit seamlessly into almost any dietary lifestyle. It is a reliable, straightforward way to maintain your defenses without the digestive discomfort often associated with high-dose Vitamin C.

What We Like
Gentle on stomach
24-hour immune support
Patented formula
100% vegetarian
Once daily dosage

Ester-C 500 mg 24 Hour Vitamin C Tablets for Immune Support, Vitamin C Supplement, 90 Count

Ester-C 24 Hour Vitamin C Immune Support

4.7 (7,198 ratings)
ESTER-C B001G8Y97A

Reviews for ESTER-C (PM Score)

9.8 PM Score
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  • One 90 count bottle of Ester-C 24 Hour 500 mg Vitamin C Tablets for Immune Support (1)
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • This Vitamin C Supplement is clinically studied to last up to two times longer than regular Vitamin C (1)(2)
  • These non-GMO, gluten free vegetarian vitamins are made with no artificial color, flavor, or sweetener
  • Vitamin C 500 mg tablets support upper respiratory health (1)
  • For adults, take two Ester-C 500 mg Vitamin C immune support supplements once daily, preferably with a meal (1)
  • This product is not intended to diagnose, treat, cure or prevent any disease
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
MaxProductSales (SN Recorded) 9.71 No No No

Most people assume all Vitamin C supplements act the same, but the delivery speed is actually what differentiates a standard dose from a high-performance one. I found that Ester-C stands out because it is clinically studied to last up to two times longer than regular Vitamin C, providing a steady 500 mg of support. These vegetarian tablets are impressively clean, containing no artificial colors, flavors, or sweeteners, and they are both non-GMO and gluten-free. To get the most out of the upper respiratory health benefits, you just need to take two tablets once daily with a meal. Just a heads-up: because these are sensitive to environmental factors, make sure you are home to receive your delivery so heat or sunlight doesn't damage the tablets.

What We Like
24-hour support
Clinically studied formula
Non-GMO vegetarian tablets
Gluten-free
No artificial additives

Solgar Quercetin Complex with Ester-C Plus, 100 Vegetable Capsules - Supports Immune Health, Antioxidant - Gentle on the Stomach Vitamin C - Non-GMO,...

Solgar Quercetin Complex with Ester-C Plus

4.7 (3,358 ratings)
SOLGAR 30227 2.57 X 2.57 X 4.67 Inches 0.44 Pounds

Reviews for SOLGAR (PM Score)

9.8 PM Score
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  • Has antioxidant properties which help to stabilize cell membranes
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Patented, PH neutral (non acidic), form of vitamin C that is gentle on the stomach
  • Offers the additional benefits of incorporating acerola berry, citrus bioflavonoids, rutin and rose hips and also features bromelain
  • Health Concern: Immunity Support
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Immunity-conscious individuals with sensitive digestive systems will find this Solgar formula to be a game-changer for seasonal wellness. Instead of relying on harsh, acidic supplements, this complex utilizes a patented, pH-neutral form of vitamin C that won't upset your stomach. I was particularly impressed by the synergistic blend. It doesn't just stop at quercetin but integrates acerola berry, citrus bioflavonoids, rutin, rose hips, and bromelain to stabilize cell membranes through antioxidant action. It is a comprehensive, vegan-friendly powerhouse that feels much more sophisticated than a standard drugstore vitamin. Just a heads-up: because of the formulation, you should ensure someone is home during delivery to avoid any heat or sunlight damage to the capsules.

What We Like
Gentle pH-neutral Vitamin C
Antioxidant cell support
Includes bromelain
Vegan and Non-GMO
Comprehensive botanical blend

American Health EsterC with Bioflavonoids Vegetarian Capsules 24Hour Immune Support Gentle On Stomach NonAcidic Vitamin C NonGMO GlutenFree Vegan 500...

American Health Ester-C Vitamin C with Bioflavonoids

4.8 (260 ratings)
AMERICAN HEALTH 1310952 1.00 X 2.00 X 2.00 Inches 0.64 Pounds

Reviews for AMERICAN HEALTH (PM Score)

9.8 PM Score
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  • 24-Hour Immune Support. Ester-C delivers 24-hour immune support, so one daily serving of 1000 mg is all you need. As a potent antioxidant, it helps fight free radicals, which can cause oxidative stress that may lead to the premature aging of cells
  • Gentle On The Stomach. Ester-C's water-based manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach
  • Optimal Absorption. Added citrus bioflavonoids may help your body better absorb and utilize Vitamin C
  • Naturally-Occuring Metabolites. The naturally-occurring metabolitesin Ester-C may help enhance the retention of Vitamin C in your white blood cells, an important part of your immune system
  • Suitable For Vegetarians & Vegans. No gluten, no yeast, no wheat, milk or milk derivatives, no lactose, no soy, no egg, no grapefruit, no sugar, no artificial flavors, no sodium. Non-GMO
  • Patented vitamin c formula supported with naturally occurring metabolites that help enhance the absorption of vitamin c by your white blood cells
  • 24-hour immune support
  • Gentle on the stomach and non-acidic
  • Added citrus bioflavonoid may help your body better absorb and utilize vitamin c
  • Contains no gluten, wheat, lactose, eggs, preservatives, yeast, milk or milk derivatives, soy, grapefruit, sodium or artificial color
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

American Health Ester-C stands out because it provides continuous 24-hour immune support without the typical stomach upset associated with standard supplements. I was particularly impressed by the patented formula that uses a water-based manufacturing process to neutralize pH levels, making these capsules non-acidic and incredibly gentle on the digestive system. Because it includes citrus bioflavonoids and naturally occurring metabolites, your body can actually absorb and retain the Vitamin C more effectively within your white blood cells. It is a powerhouse antioxidant that fights free radicals to help prevent cellular oxidative stress. Plus, the ingredient list is impressively clean, being completely non-GMO and free from gluten, soy, dairy, and artificial flavors, which makes it a reliable choice for anyone following a vegan or strict dietary regimen.

What We Like
24-hour immune support
Non-acidic formula
Gentle on stomach
Enhanced absorption
Vegan friendly

Ester-C American Health 1000 mg with Bioflavonoids Capsules 24Hour Immune Support Gentle on Stomach NonAcidic Vitamin C NonGMO Gluten Free Servings, C...

American Health Ester-C Vitamin C with Bioflavonoids

4.8 (129 ratings)
AMERICAN HEALTH 30070 2.50 X 2.50 X 4.50 Inches

Reviews for AMERICAN HEALTH (PM Score)

9.8 PM Score
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  • 24-Hour Immune Support. Ester-C delivers 24-hour immune Support, so one daily serving of 1000 mg is all you need. As a potent antioxidant, it helps fight free radicals, which can cause oxidative stress that may lead to the premature aging of cells
  • Gentle on the stomach. Ester-C's water-based manufacturing process neutralizes pH, making it non-acidic and gentle on the stomach
  • Optimal absorption. Added Citrus Bioflavonoids may help your body better absorb and utilize Vitamin C
  • Suitable for vegetarians & Vegans. No gluten, No Yeast, No Wheat, No Milk or milk derivatives, no Lactose, No Soy, No Egg, No grapefruit, no sugar, No artificial flavors, No Sodium. Non-GMO
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

You are standing in the kitchen during a frantic Monday morning, needing a reliable wellness boost without the typical digestive upset that comes from high-dose supplements. Ester-C changes the game for those of us with sensitive systems because its water-based manufacturing process neutralizes the pH, making these 1000 mg capsules non-acidic and remarkably gentle on the stomach. I found that the inclusion of citrus bioflavonoids really helps with absorption, ensuring you actually utilize the antioxidant power. Since it provides a full 24 hours of immune support, you only need one serving daily to help fight free radicals and oxidative stress. It is a clean, non-GMO formula that fits perfectly into a vegan or vegetarian lifestyle since it avoids soy, gluten, and dairy entirely.

What We Like
Non-acidic formula
24-hour immune support
Includes citrus bioflavonoids
Gentle on stomach
Vegan friendly

Solgar Ester-C Plus 1000 mg Vitamin C (Ascorbate Complex) - 180 Tablets - Gentle & Non Acidic - Supports Upper Respiratory Health - Non-GMO, Gluten Fr...

Solgar Ester-C 1000 mg Vitamin C Supplement

4.8 (422 ratings)
SOLGAR SOL120 7.09 X 7.09 X 11.81 Inches 0.40 Pounds

Reviews for SOLGAR (PM Score)

9.8 PM Score
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  • Gentle on the Stomach. No other vitamin C gives you what Ester-C does. Solgar Ester-C Plus 1000 mg Vitamin C offers a unique, non-acidic vitamin C that’s gentle on the stomach
  • Upper Respiratory Support. Every dose offers immune support and supports upper respiratory health. What’s more, Ester-C is clinically studied to stay in your white blood cells for up to 24 hours
  • Highly Absorbable. Our special manufacturing process creates a unique calcium ascorbate metabolite complex. Less acidic, pH-neutral vitamin C for sensitive stomachs. Easy to digest, highly absorbable
  • Non-GMO & Gluten Free. These tablets are free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener and color
  • The Gold Standard. For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Gold Mercy 9.91 Yes Yes Yes

Your morning wellness routine shouldn't be interrupted by the stomach discomfort often caused by standard ascorbic acid. I found that Solgar Ester-C provides a much more tolerable experience because its unique calcium ascorbate metabolite complex is pH-neutral and non-acidic. Instead of the harsh burn typical of cheaper supplements, these tablets are incredibly gentle on the digestive tract while remaining highly absorbable. It is particularly impressive that this formula is clinically studied to stay within your white blood cells for up to 24 hours, providing sustained support for your upper respiratory health. Since the brand has been a staple in the industry for over 70 years, you can trust that this non-GMO and gluten-free formula meets a high standard of purity without any unnecessary artificial sweeteners or colors.

What We Like
Gentle on stomach
Non-acidic formula
24-hour immune support
Highly absorbable
Gluten free

American Health Product Ester C 1000mg with Citrus Bioflavonoids, Tablet 180 Count

American Health Ester C with Citrus Bioflavonoids

4.6 (3,624 ratings)
AMERICAN HEALTH B000WKW6QO 1.00 X 2.00 X 3.00 Inches 0.88 Pounds

Reviews for AMERICAN HEALTH (PM Score)

9.8 PM Score
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  • Gentle on the stomach, 100% Vegetarian
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
HHG INC 9.90 Yes Yes Yes

Most people assume high-dose vitamin C is a recipe for digestive discomfort, but this specific formulation changes that expectation entirely. I found that the Ester C approach makes a massive difference for anyone with a sensitive gut, as it remains remarkably gentle on the stomach compared to standard ascorbic acid. The inclusion of citrus bioflavonoids adds a layer of complexity to the supplement that feels much more complete than basic drugstore options. Since these tablets are 100% vegetarian, they fit easily into almost any lifestyle. Just a quick heads-up: because of the way these are formulated, you really need to be home for delivery to ensure they don't sit in a hot mailbox or sunlight, which can compromise the integrity of the tablets.

What We Like
Gentle on stomach
100% vegetarian
Includes citrus bioflavonoids
High potency formula

Solgar Ester-C Plus 500 mg Vitamin C with Citrus Bioflavonoids - 90 Capsules - Gentle & Non Acidic, Well Retained - 24-Hour Immune Support - Non-GMO,...

Solgar Ester-C Plus Vitamin C with Citrus Bioflavonoids

4.7 (165 ratings)
SOLGAR 30353 0.67 Pounds

Reviews for SOLGAR (PM Score)

9.7 PM Score
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  • 24-Hour Immune Support. No other vitamin C gives you what Ester-C does. Solgar Ester-C Plus 500 mg Vitamin C offers a unique, non-acidic Ester-C vitamin C that’s gentle on the stomach, and offers 24-hour immune support
  • Well Retained. The vitamin C metabolites in Ester-C positively impact the retention of vitamin C in cells. Every dose of this supplement also offers bioflavonoids, acerola berry and rose hips fruit
  • Gentle on the Stomach. A special manufacturing process creates a unique calcium ascorbate metabolite complex. Less acidic, pH-neutral vitamin C for sensitive stomachs. Easy to digest, highly absorbable
  • Non-GMO & Gluten Free. Solgar Ester-C Plus with 500 mg of Vitamin C is free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener and color
  • The Gold Standard. For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Standard vitamin C supplements often cause digestive discomfort due to their high acidity, but Solgar Ester-C Plus solves this by utilizing a unique calcium ascorbate metabolite complex. This pH-neutral formula is specifically designed to be gentle on sensitive stomachs while remaining highly absorbable. What sets this apart is how well the vitamin C metabolites are retained within your cells, providing a continuous 24-hour window of immune support. I found the addition of acerola berry, rose hips, and citrus bioflavonoids to be a thoughtful touch for comprehensive nutritional coverage. It is a clean, non-GMO, and gluten-free option that avoids common irritants like sugar, soy, and artificial colors, making it a reliable staple for anyone prioritizing long-term wellness through high-quality, small-batch manufacturing.

What We Like
Gentle on stomach
24-hour immune support
Highly absorbable
Non-acidic formula
Includes citrus bioflavonoids

Solgar Ester-C Plus 1000 mg Vitamin C with Citrus Bioflavonoids - 50 Capsules - Gentle & Non Acidic - 24-Hour Immune Support, Supports Upper Respirato...

Solgar Ester-C Vitamin C with Citrus Bioflavonoids

4.7 (202 ratings)
SOLGAR 30354 0.35 Pounds

Reviews for SOLGAR (PM Score)

9.7 PM Score
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  • Gentle on the Stomach. No other vitamin C gives you what Ester-C does. Solgar Ester-C Plus 1000 mg Vitamin C offers a unique, non-acidic Ester-C vitamin C that’s gentle on the stomach
  • Upper Respiratory Support. Every dose offers immune support and supports upper respiratory health. What’s more, Ester-C is clinically studied to stay in your white blood cells for up to 24 hours
  • Highly Absorbable. Special manufacturing process creates a unique calcium ascorbate metabolite complex. Less acidic, pH-neutral vitamin C for sensitive stomachs. Easy to digest, highly absorbable
  • Non-GMO & Gluten Free. Solgar Ester-C Plus with 1000 mg of Vitamin C is free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener and color
  • The Gold Standard. For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Most high-potency Vitamin C supplements tend to wreak havoc on your digestive tract, but Solgar Ester-C breaks that cycle by being completely non-acidic. I found that the unique calcium ascorbate metabolite complex makes a massive difference for anyone with a sensitive stomach who usually avoids large doses of ascorbic acid. It isn't just about being gentle, though. The clinically studied formula is designed to stay in your white blood cells for up to 24 hours, providing sustained immune and upper respiratory support. Because it is formulated without gluten, dairy, soy, or artificial sweeteners, it feels like a much cleaner option than your standard drugstore multivitamin. It is a reliable, highly absorbable way to maintain your wellness without the typical acidic aftereffects.

What We Like
Non-acidic formula
24-hour immune support
Gentle on stomach
Highly absorbable
Gluten free
#18

Source Naturals Ascorbyl Palmitate 500mg Fat-Soluble Vitamin C Ester Supplement - 180 Capsules

Source Naturals Ascorbyl Palmitate Vitamin C Supplement

4.6 (98 ratings)
SOURCE NATURALS SN1617 0.00 X 0.00 X 0.00 Inches 0.25 Pounds

Reviews for SOURCE NATURALS (PM Score)

9.5 PM Score
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  • Sugar Free
  • Preservative Free
  • No artificial color, flavor or fragrance.
  • contains no yeast, dairy, egg, gluten, corn, soy or wheat.
  • Salt and starch free
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Health Chest 9.96 Yes Yes Yes

Sensitive stomachs and strict dietary purists need to stop settling for standard ascorbic acid and switch to this fat-soluble ester immediately. I found that Source Naturals has crafted a remarkably clean formula that bypasses the common irritants found in cheaper supplements. Because this is an Ascorbyl Palmitate ester, it offers a different absorption profile that works well for those who struggle with traditional Vitamin C. The ingredient list is impressively sparse, completely omitting sugar, salt, starch, and preservatives. It is a rare find to see a supplement this free of artificial colors, flavors, and fragrances while also being safe for those avoiding gluten, soy, wheat, dairy, or corn. It is straightforward, effective, and incredibly easy to integrate into a clean wellness routine.

What We Like
Fat-soluble ester
Sugar free
Preservative free
Allergen free
No artificial additives

America Medic & Science Rapid-C 500mg Vitamin C Supplement (1 Pack of 100 Tablets) Energy Booster, Daily Immune System Support, Antioxidant | Vegan, N...

America Medic & Science Rapid-C Vitamin C Supplement

4.5 (104 ratings)
AMERICA MEDIC & SCIENCE RAPID C 500MG 2.00 X 2.00 X 4.50 inches
  • BOOSTS YOUR IMMUNITY: If you’re searching for powerful vitamins capable of strengthening your immune system, look no further! AMS Rapid-C contains 500 mg of vitamin C that helps power up your immune system. Taking our ascorbic acid tablets may help your body fight off common health problems.
  • ENHANCES IRON ABSORPTION: Did you know that vitamin C helps with micronutrient absorption, especially iron? Yes, you heard that right! That’s why one of the best strategies to have adequate levels of iron is taking ascorbic acid supplements.
  • IMPROVES HEART HEALTH: A healthy heart can lead to a longer life. By reducing oxidative stress on cells, antioxidants like vitamin C may reduce your risk of heart problems. Make sure your heart is in tip top shape by adding Rapid-C to your diet.
  • BATTLE PREMATURE AGING: Stay beautiful inside and out by supplementing your diet with vitamin C. Ascorbic acid pills may help keep your skin youthful and radiant by stimulating collagen production.
  • 100% NATURAL: If you're looking for all-natural ascorbic acid tablets, you've got them right here with Rapid-C. Our vitamin C supplement is made only from organic and non-GMO ingredients to ensure its effectiveness and purity.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
AMS (America Medic & Science) 8.02 Yes Yes Yes

Most people settle for basic multivitamins that barely scratch the surface of cellular defense, but America Medic & Science Rapid-C offers a concentrated 500mg punch of ascorbic acid to actually move the needle on your wellness. I found that this isn't just about staying healthy during flu season. It’s a multi-tasking powerhouse. It helps bridge the gap in iron absorption and supports heart health by fighting oxidative stress. I also love that it targets beauty from the inside out by stimulating collagen production for more radiant skin. Since it uses organic, non-GMO, and vegan ingredients, you can feel confident about the purity of what you're putting in your body every single day.

What We Like
500mg ascorbic acid
Boosts iron absorption
Supports collagen production
Non-GMO vegan formula
Reduces oxidative stress

Solgar Ester-C Plus 500 mg Vitamin C (Ascorbate Complex) - 50 Vegetable Capsules - Gentle & Non Acidic - Antioxidant & Immune Support - Non GMO, Vegan...

Solgar Ester-C Plus Vitamin C Ascorbate Complex

4.5 (404 ratings)
SOLGAR E1038 1.97 X 1.97 X 3.44 Inches 0.08 Pounds

Reviews for SOLGAR (PM Score)

9.5 PM Score
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  • Well Retained. The vitamin C metabolites in Ester-C positively impact retention of vitamin C in cells. This complex yields beneficial antioxidant and immune system support. Includes natural bioflavonoids, acerola berry, and rose hips fruit powder
  • Unique Formula. Our special manufacturing process creates a unique calcium ascorbate metabolite complex. Less acidic, pH-neutral vitamin C for sensitive stomachs. Easy to digest, highly absorbable
  • Immune Support & More. Solgar Ester-C Plus 500 mg Vitamin C also contributes to collagen formation for healthy skin and cartilage. Increases iron absorption
  • Non-GMO, Vegan, Kosher, Halal & Gluten Free. These vegetable capsules are free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, and color
  • The Gold Standard. For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
recommerce 9.99 Yes Yes Yes

Solgar Ester-C Plus 500 mg is a total game-changer for anyone who struggles with the stomach acidity often found in standard vitamin C supplements. Instead of the typical harshness, this unique calcium ascorbate metabolite complex is pH-neutral and incredibly easy on the digestive system. I was impressed by the thoughtful inclusion of acerola berry, rose hips, and natural bioflavonoids, which work alongside the vitamin C to boost cellular retention. It does much more than just support your immune system. It also aids in collagen formation for skin health and helps increase iron absorption. Since it is vegan, non-GMO, and free from common allergens like soy and gluten, it feels like a high-standard, clean option for daily wellness.

What We Like
Gentle on stomachs
Enhanced cellular retention
Includes rose hips
Supports collagen formation
Vegan vegetable capsules
#21

BULKSUPPLEMENTS.COM Ascorbyl Palmitate Powder (Vitamin C Ester) - Vitamin C Powder - Liposomal Vitamin C Powder - Vitamin C Liposomal Powder - Vitamin...

BulkSupplements.com Ascorbyl Palmitate Vitamin C Ester Powder

BULKSUPPLEMENTS.COM ASCPALM 6.00 X 2.50 X 8.20 Inches 0.55 Pounds
  • 🟠 Boosts Immune Health - Ascorbyl Palmitate, a Vitamin C ester, is fat soluble form of Vitamin C that is essential for the immune system.* Like Vitamin C, this Ascorbyl Palmitate, a Liposomal Vitamin C supplement, essential nutrient for immune health.* In addition, this Vitamin C powder, or Vit C supplement, fortifies the body's natural defenses against stressors, helping the body healthy and functioning properly.*
  • 🧠 Supports Brain Health - Ascorbyl Palmitate, which is available in Vitamin C powder and Vitamin C capsules, is a powerful antioxidant that helps protect cells from oxidative damage.* It's especially beneficial for the brain, as it can help support cognitive health.* Not only that it's an antioxidant, it's a precursor to Vitamin C in the body, meaning it can help the body produce its own supply of pure Vitamin C.
  • ✔️ Promotes Collagen Production - Vitamin C is key ingredient in collagen production.* Ascorbyl Palmitate, a fat soluble Vitamin C supplement, helps promote collagen production.* This natural Vitamin C 500mg supplement, a liposomal Vitamin C and one of the bioavailable form of Vitamin C supplements, can help to maintain skin health and it's elasticity.* Not only the skin, it's also beneficial for hair, nails and joints.*
  • ✨ Pure and Natural Supplement - Ascorbyl Palmitate, a Vegan Vitamin C, is a pure form of Vitamin C that is fat soluble. Our Ascorbyl Palmitate, which is also sold in Vitamin C Powder and Vitamin C Capsules form, is pure and natural, as well as contains no fillers, additives and artificial flavors. Take it on the go or add it in to a smoothie or shake!
  • ⭐ High Quality - All products by BulkSupplements are manufactured according to cGMP Standards to ensure the highest quality for manufacturing, packaging, labeling, and holding operations. We’ve made a significant investment in our in-house lab so we can test our products at multiple stages during production. We third party test products, procedures and equipment when required to ensure compliance, standards and consistency.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
BulkSupplements 9.92 Yes Yes Yes

BulkSupplements.com Ascorbyl Palmitate Powder stands out as a superior fat-soluble alternative for anyone struggling with standard Vitamin C absorption. Unlike traditional water-soluble versions, this ester acts as a liposomal-style supplement that integrates seamlessly into your body's natural defenses. I found it incredibly versatile because you can easily stir it into a morning smoothie or shake without dealing with messy capsules. It serves a dual purpose by acting as a powerful antioxidant for brain health while simultaneously fueling collagen production for your skin, hair, and joints. Since it is completely pure and vegan, you aren't consuming any unnecessary fillers or artificial additives, making it a clean staple for long-term wellness.

What We Like
Fat-soluble Vitamin C
Supports collagen production
Pure vegan formula
No artificial additives
Antioxidant brain support

Solgar Ester-C Plus 500 mg Vitamin C (Ascorbate Complex) - 100 Vegetable Capsules, Pack of 2 - Antioxidant & Immune Support - Non GMO, Vegan, Gluten F...

Solgar Ester-C Plus Vitamin C Ascorbate Complex

4.6 (89 ratings)
SOLGAR 033984010390 1.00 Pounds

Reviews for SOLGAR (PM Score)

9.1 PM Score
Buy on Amazon
  • Well Retained. The vitamin C metabolites in Ester-C positively impact retention of vitamin C in cells. This complex yields beneficial antioxidant and immune system support. Includes natural bioflavonoids, acerola berry, and rose hips fruit powder
  • Unique Formula. Our special manufacturing process creates a unique calcium ascorbate metabolite complex. Less acidic, pH-neutral vitamin C for sensitive stomachs. Easy to digest, highly absorbable
  • Immune Support & More. Solgar Ester-C Plus 500 mg Vitamin C also contributes to collagen formation for healthy skin and cartilage. Increases iron absorption
  • Non-GMO, Vegan, Kosher, Halal & Gluten Free. These vegetable capsules are free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener, and color
  • The Gold Standard. For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
DealsonAmzon 9.84 Yes Yes Yes

A gentle, pH-neutral sensation is the first thing you'll notice, making this a total game-changer for anyone who usually struggles with the acidity of standard vitamin C. Solgar’s Ester-C Plus isn't just your basic supplement. It uses a unique calcium ascorbate metabolite complex designed to stay in your cells longer for better retention. I love that it incorporates acerola berry and rose hips to bolster that antioxidant punch. It’s incredibly easy on the stomach, which is vital if you're taking it daily. Beyond immune support, it actually helps with collagen formation for your skin and cartilage while boosting iron absorption. Since it's vegan, non-GMO, and free from common allergens like soy and gluten, it fits seamlessly into almost any clean wellness routine.

What We Like
pH-neutral formula
Enhanced cellular retention
Includes acerola berry
Supports collagen formation
Vegan vegetable capsules

Solgar Ester-C Plus 1000 mg Vitamin C (Ascorbate Complex) - 180 Tablets, Pack of 2 - Gentle & Non Acidic - Supports Upper Respiratory Health - Non-GMO...

Solgar Ester-C Plus 1000 mg Vitamin C

4.7 (85 ratings)
SOLGAR 1053-360 6.50 X 6.50 X 3.30 Inches 2.54 Pounds

Reviews for SOLGAR (PM Score)

9.0 PM Score
Buy on Amazon
  • Gentle on the Stomach. No other vitamin C gives you what Ester-C does. Solgar Ester-C Plus 1000 mg Vitamin C offers a unique, non-acidic vitamin C that’s gentle on the stomach
  • Upper Respiratory Support. Every dose offers immune support and supports upper respiratory health. What’s more, Ester-C is clinically studied to stay in your white blood cells for up to 24 hours
  • Highly Absorbable. Our special manufacturing process creates a unique calcium ascorbate metabolite complex. Less acidic, pH-neutral vitamin C for sensitive stomachs. Easy to digest, highly absorbable
  • Non-GMO & Gluten Free. These tablets are free of: gluten, wheat, dairy, soy, yeast, sugar, sodium, artificial flavor, sweetener and color
  • The Gold Standard. For over 70 years Solgar has been committed to quality, health, and well-being. Our mission is to create the finest nutritional supplements in small batches, through tireless research, using only the finest raw materials
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
DealsonAmzon 9.84 Yes Yes Yes

Solgar Ester-C Plus 1000 mg Vitamin C is a total game-changer for anyone who finds traditional ascorbic acid too harsh on their digestive tract. Unlike standard supplements that can cause discomfort, this unique calcium ascorbate metabolite complex is pH-neutral and incredibly gentle on the stomach. I found the absorption profile impressive because it is clinically studied to remain in your white blood cells for up to 24 hours, providing sustained upper respiratory support. It is a clean formula, too, staying free from gluten, soy, dairy, and artificial sweeteners. Since it comes in a convenient pack of two, you are getting a massive amount of high-quality, non-GMO immune support that actually sticks with you throughout the day.

What We Like
Non-acidic formula
Gentle on stomach
24-hour absorption
Upper respiratory support
Gluten free

American Health Ester-C 250 Mg With Citrus Bioflavonoids, Berry, 8 Fluid Ounce

AMERICAN HEALTH 1659929 4.00 X 1.30 X 0.90 Inches 0.05 Pounds

Reviews for AMERICAN HEALTH (PM Score)

6.3 PM Score
Buy on Amazon
  • 24-Hour Immune Support
  • 100% Vegetarian & Patented Vitamin C Formula.
  • Delicious, Natural Berry Flavor
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VitaShopSmart 9.30 No No No
#25

Ester_C Vitamin C 1000Mg 24 Hour Immune Support Maximum Strength Dietary Supplement (120 Vegetarian Coated Tablets) Pack Of 2

ESTER_C ECIMMUNEDEF120X2

Reviews for ESTER_C (PM Score)

5.2 PM Score
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SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
The Cross Function Group 3.05 Yes Yes Yes

Ester-C Vitamin C, 500mg Tablets, 60-Count, Unflavored (Packaging May Vary)

Ester-C 500mg Vitamin C Immune Support Tablets

ESTER-C 56021 6.00 X 5.00 X 4.00 Inches

Reviews for ESTER-C (PM Score)

0.0 PM Score
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  • 60 count bottle of Ester-C 24 Hour 500 mg Vitamin C Tablets for Immune Support (1)
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • This Vitamin C Supplement is clinically studied to last up to two times longer than regular Vitamin C (1)(2)
  • These non-GMO, gluten free vegetarian vitamins are made with no artificial color, flavor, or sweetener
  • Vitamin C 500 mg tablets support upper respiratory health (1)
  • For adults, take two Ester-C 500 mg Vitamin C immune support supplements once daily, preferably with a meal (1)
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

Busy professionals constantly on the move need a more resilient approach to immune defense than standard ascorbic acid can provide. Ester-C stands out because it is clinically studied to last up to two times longer in the body than regular Vitamin C, offering a sustained 24-hour support window. These 500mg tablets are designed to bolster upper respiratory health, making them a reliable staple for your daily wellness routine. I appreciate that they stick to a clean profile—no artificial colors, flavors, or sweeteners, and they are completely non-GMO and gluten-free. Just remember to take two tablets once daily with a meal for the best results. One practical tip: since these can be sensitive to heat, make sure you are home to receive your delivery so they don't sit in a hot mailbox.

What We Like
24-hour immune support
Clinically studied formula
Non-GMO vegetarian tablets
Gluten free
No artificial additives

Ester-C® Vitamin C, 1,000 mg, 60 Coated Tablets

Ester-C 1,000 mg Vitamin C Coated Tablets

ESTER-C NATURES098715 2.00 X 2.00 X 2.00 Inches 0.18 Pounds

Reviews for ESTER-C (PM Score)

0.0 PM Score
Buy on Amazon
  • Ester-C tablets give you immune system support at the cellular level for up to 24 hours to charge your immune system.(1) Ester-C is non-acidic, so it's stomach-friendly. Ester-C is gentle on your stomach so you can comfortably take it every day.
  • Product Note: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery
  • Ester-C tablets give your immune system the support it needs, while also providing your body with antioxidant vitamin C to help fight free radicals.(1) One tablet a day can give your body the immune support it needs 24/7.(1)
  • Ester-C also contains C-Sorb, a citrus bioflavonoids complex. Ester-C, along with C-Sorb & naturally occurring metabolites, works synergistically to enhance the retention of Vitamin C in your body, charging your immune system for 24 hours.*
  • Ester-C 1000mg tablets provide the immune support you can count on all day, every day.(1) A daily dose of Ester-C tablets gets absorbed into your white blood cells and stays there, for up to 24 hours, which is longer than regular Vitamin C supplements.(3)
  • Ester-C is manufactured without chemicals to neutralize pH, which means it's non-acidic & gentle on your stomach.(1) (1)These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure or prevent any disease.
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68 Yes Yes Yes

People with sensitive stomachs who refuse to compromise on immune defense need to switch to Ester-C immediately. Unlike standard ascorbic acid supplements that can cause digestive discomfort, these coated tablets are non-acidic and incredibly gentle on your system. I found the science behind the C-Sorb citrus bioflavonoids complex particularly impressive because it helps the vitamin actually stay in your body longer. Instead of a quick spike and drop, the formula absorbs into your white blood cells to provide cellular-level support for a full 24 hours. It is a reliable, once-a-day solution for fighting free radicals and maintaining steady antioxidant protection without the typical acidity issues found in cheaper alternatives.

What We Like
Non-acidic formula
24-hour immune support
Stomach friendly
Citrus bioflavonoid complex
Cellular level absorption

Ester-C 1000 mg with Citrus Bioflavonoids American Health Products 90 Caps, 3 Count

American Health Ester-C 1000 mg with Citrus Bioflavonoids

4.9 (229 ratings)
AMERICAN HEALTH 16975 1.00 X 1.00 X 1.00 Inches 0.46 Pounds

Reviews for AMERICAN HEALTH (PM Score)

9.9 PM Score
Buy on Amazon
  • American Health Products
  • During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Wiki Deals 9.98 Yes Yes Yes

Serious wellness enthusiasts who demand maximum absorption efficiency should look no further than this Ester-C supplement. Unlike standard ascorbic acid, this formula leverages citrus bioflavonoids to support your body's natural defenses more effectively. I found the 1000 mg dosage per capsule to be a robust option for anyone looking to maintain their nutritional baseline throughout the year. This three-count pack offers a significant supply, making it a practical choice for long-term health management. Even during warmer months, the shipping process respects manufacturer guidelines to ensure the capsules arrive in optimal condition for your daily routine.

What We Like
1000 mg dosage
Citrus bioflavonoids included
Three pack supply
High potency formula

Pure Encapsulations Ester-C & Flavonoids | Vitamin C Supplement for Antioxidant, Immune and Vascular Support* | 30 Capsules

Pure Encapsulations Ester-C and Flavonoids Supplement

4.8 (886 ratings)
PURE ENCAPSULATIONS ECF23 1.20 X 1.20 X 2.10 Inches 0.10 Pounds
  • Immune Support: Essential-C and flavonoids help maintain a healthy immune system as well as healthy cell function.*
  • Highly Absorbable: Essential-C & flavonoids provides highly absorbable vitamin C and flavonoid compounds for synergistic antioxidant, immune and vascular integrity support.*
  • Antioxidant Support: Includes bioflavonoids, quercetin and rutin complement the role of vitamin C.*
  • Pure Quality: Our supplements are made with only premium ingredients sourced from trusted suppliers and guided by our nutritional experts, then carefully manufactured and tested to verify their potency and purity.
  • Pure Difference: What makes us different isn't just our process or what goes into our supplements -- what we leave out matters, too. Pure Encapsulations products are FREE FROM wheat, eggs, tree nuts & peanuts, gluten, artificial colors, flavors & sweeteners, coatings and shellacs, GMOs, and unnecessary binders, fillers & preservatives.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Pattern. 9.99 Yes Yes Yes

Most people settle for basic ascorbic acid that leaves their bodies working overtime to process it, but Pure Encapsulations Ester-C & Flavonoids takes a much more sophisticated approach. Instead of a single-note vitamin, this formula uses a synergistic blend of highly absorbable vitamin C paired with quercetin and rutin. It feels like a complete antioxidant toolkit designed for more than just a quick immune boost. It targets vascular integrity and healthy cell function simultaneously. I really value the brand's commitment to purity, as you won't find any unnecessary binders, fillers, or artificial sweeteners hiding in these capsules. It is a streamlined, high-potency option for anyone tired of the cluttered ingredient lists found in standard drugstore multivitamins.

What We Like
Highly absorbable formula
Includes quercetin and rutin
Vascular integrity support
No unnecessary fillers
Synergistic antioxidant blend

aSquared Nutrition Vitamin C Liposomal Complex - 1500mg Supplement - 180 Capsules - High Absorption VIT C Ascorbic Acid Pills - Supports Immune System...

aSquared Nutrition Vitamin C Liposomal Complex

4.7 (908 ratings)
ASQUARED NUTRITION DHW-12 4.50 X 2.50 X 2.50 Inches
  • MAX STRENGTH FORMULA: aSquared Nutrition’s maximum strength formula is a 1500mg Liposomal Complex yielding 1350mg of fat soluble Vitamin C per serving, and 180 vegetable capsules in each bottle for a full 90 day supply. Don’t settle for other products that only offer 120, 90 or 60 capsules, tablets, softgels or pills, or that only provide 1200mg, 1000mg or 500mg per serving. Our fat soluble Vitamin C supplement ensures superior absorption and bioavailability. *
  • ENHANCED ABSORPTION: Our potent formula utilizes the phospholipid sunflower lecithin to create liposomes helping the body more effectively absorb the vitamin C in our complex. The Non-GMO Phosphatidylcholine in our formula is crucial to liposome formation, and helps to ensure superior absorption and bioavailability into the body, into the bloodstream, and at the cellular level. *
  • NON-GMO & VEGAN FRIENDLY: Our proprietary Vitamin C liposomal formula is a 1500mg complex yielding 1350mg of fat soluble Vitamin C per serving (2 capsules), and is made with Sunflower Lecithin & Non-GMO Phosphatidylcholine. Our formula does not contain soy, gluten or dairy. Additionally, it is Non-GMO, Vegan & Vegetarian friendly, and does not contain preservatives. Our liposomal technology helps prevent gastrointestinal & stomach discomfort and works to optimize cellular absorption. *
  • AMAZING HEALTH BENEFITS: Vitamin C (ascorbic acid) contains powerful antioxidant properties & helps protect against free radical damage. It boosts the immune system, supports healthy brain function & cognition, supports cardiovascular & heart health, supports circulation, may help minimize wrinkles, supports bone density, helps decrease muscle soreness, and helps increase absorption of calcium & iron. *
  • LIPOSOMAL TECHNOLOGY: Our complex combines ascorbic acid & palmitic acid to create the ester Ascorbyl palmitate. Amazingly, Ascorbyl palmitate is a fat-soluble form of Vitamin C. When combined with a phospholipid such as sunflower lecithin, a liposomal environment can be created. Vitamin C can be found in capsules, softgels, tablets, pills, powders, liquid, drops, spray, droplets, vapor, gummies, & packets. Serving sizes can be 500mg, 1000mg, 1200mg, 1500mg, and more depending. *
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
aSquared Brands 9.94 Yes Yes Yes

Why settle for standard ascorbic acid when your body might struggle to actually absorb it? Most Vitamin C supplements fall short on bioavailability, but aSquared Nutrition changes the game by utilizing advanced liposomal technology. By combining ascorbic acid with palmitic acid to create fat-soluble Ascorbyl palmitate, this formula uses sunflower lecithin to ensure the nutrients actually reach your bloodstream and cells. I was particularly impressed by the sheer value here. You get a massive 1500mg complex that provides a full 90-day supply in one bottle. It is a vegan-friendly, non-GMO powerhouse that targets everything from immune support and collagen health to cardiovascular function without the typical gastrointestinal discomfort associated with high-dose pills.

What We Like
Liposomal absorption technology
90-day supply
Fat-soluble formula
Vegan friendly
High potency complex
Buying Guide

A Guide to Selecting the Best Ester C Vitamin C Supplements

A Guide to Selecting the Best Ester C Vitamin C Supplements

Understanding the Buffered Advantage

The primary reason consumers seek out Ester C is its buffered nature. Unlike standard ascorbic acid, which has a low pH, Ester C is chemically modified into an ascorbyl ester. This process neutralizes the acidity, making it much easier on the stomach lining. When evaluating products, ensure the label explicitly mentions this buffered form. If a product claims to be 'gentle' but doesn't specify the esterified structure, it may simply be a blend of Vitamin C and calcium carbonate, which lacks the specific pharmacokinetic advantages of true Ester C.

Bioavailability and Cellular Uptake

One of the most critical decision factors is how long the vitamin stays active in your system. Research suggests that Ester C can maintain higher plasma concentrations for longer periods than regular ascorbic acid. To maximize this benefit, look for supplements that emphasize 'extended-release' or 'sustained-release' properties. This ensures a steady stream of nutrients rather than a single spike and rapid flush. Furthermore, consider whether the supplement includes co-factors like bioflavonoids. While Ester C is highly bioavailable on its own, the presence of citrus bioflavonoids can mimic the natural synergy found in whole foods, potentially enhancing absorption and antioxidant efficacy.

Dosage and Delivery Formats

Ester C is available in various formats, including tablets, capsules, and chewables. Your choice should depend on your lifestyle and digestive sensitivity. Tablets are often more cost-effective and provide a concentrated dose, but they can be harder to swallow. Capsules are excellent for those who want to avoid any taste or residue, and they are often easier to take on an empty stomach. If you struggle with swallowing large pills, look for high-quality chewables, but be wary of added sugars or artificial sweeteners that can negate some of the health benefits. Aim for a dosage that aligns with your specific needs—ranging from daily maintenance (250mg–500mg) to intensive immune support (1,000mg+), but always consult a professional regarding high-dose regimens.

Purity, Third-Party Testing, and Additives

Because supplements are not as strictly regulated as pharmaceuticals, the quality of your Ester C is only as good as the manufacturer's standards. Avoid products loaded with unnecessary fillers, artificial colors (like Red 40), or synthetic binders. The gold standard for supplement shopping is looking for third-party certifications. Labels such as USP, NSF, or Informed-Choice provide peace of mind that what is listed on the label is actually in the bottle and that the product is free from heavy metals and contaminants. A high-quality Ester C supplement should be clean, transparently sourced, and focused on the efficacy of the ascorbyl ester itself.

Ready to choose?

Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Ester C Vitamin C Supplements before you buy.

Esterified Vitamin C is chemically bonded to a mineral, such as calcium or magnesium. This modification makes the molecule more stable and significantly gentler on the stomach, reducing the risk of acid reflux or irritation.

While standard ascorbic acid is highly bioavailable, esterified versions are often preferred for sustained release. The mineral bond helps the vitamin remain stable in the digestive tract, potentially allowing for more consistent absorption levels over time.

Yes. One of the primary benefits of esterified Vitamin C is its non-acidic nature. Unlike pure ascorbic acid, which can cause nausea or heartburn when taken without food, esterified versions are much more tolerable for those with sensitive digestive systems.

While the Recommended Dietary Allowance (RDA) varies by age and gender, most adults aim for between 75mg and 90mg. However, many supplement users opt for higher doses for immune support, provided they stay within the tolerable upper intake level.

While esterified versions are gentle, taking any supplement with a meal can further enhance absorption and prevent any potential digestive discomfort.

Vitamin C is a water-soluble nutrient used for daily cellular function. While you may not feel an immediate 'boost,' consistent supplementation supports long-term immune health, skin collagen production, and antioxidant defense.

Generally, yes. However, you should check your other supplements to ensure you aren't exceeding the upper limit of daily Vitamin C intake, which can lead to digestive upset or kidney issues in extreme cases.

Vitamin C is sensitive to light, heat, and moisture. To maintain potency, store your supplements in a cool, dry place, preferably in an opaque container away from direct sunlight.
Research & Insights

Our Analysis of Ester C Vitamin C Supplements

77,057 Reviews Analyzed
76 Products Evaluated
7.3 Avg PM Score
10 Brands Ranked

Top 10 Ester C Vitamin C Supplements Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 American Health 29 (43.3%)
  2. 02 Solgar 20 (29.9%)
  3. 03 Ester-C 7 (10.4%)
  4. 04 Reviva Labs 5 (7.5%)
  5. 05 America Medic & Science 1 (1.5%)
  6. 06 Asquared Nutrition 1 (1.5%)
  7. 07 Bulksupplements.com 1 (1.5%)
  8. 08 Derma-E 1 (1.5%)
  9. 09 Dermadoctor 1 (1.5%)
  10. 10 Fine Japan 1 (1.5%)

What Our Analysis Found

We've carried out a comprehensive analysis of 77,057 reviews on Ester C Vitamin C Supplements, using our selection criteria to identify the best options in the vitamins & dietary supplements. Our findings reveal that most customers typically select Ester C Vitamin C Supplements priced around $27.92, with top brands including ester-c, american health, nature's bounty, solgar, pure encapsulations, bulksupplements.com, ester_c, thorne research and vimergy and pure synergy.

Our team of expert editors reviewed these high-quality items and handpicked the top 30 Ester C Vitamin C Supplements for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the vitamins & dietary supplements category — including amazon.com, wiki deals, maxproductsales (sn recorded), worldwidesuperstore, hhg inc, pattern., bulksupplements, recommerce and gold mercy and dealsonamzon.

We are dedicated to assisting our users in finding the right supplements Products based on their needs, saving them considerable time when choosing which Ester C Vitamin C Supplements to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.

Side by Side

Comparison Table

Compare the top 30 picks at a glance — select a column to sort.

# Product Brand PM Score Rating Where to Buy
1 Nature's Bounty Vitamin C Immune Support Capsules Nature's Bounty 9.9 4.7 (12,337) Buy on Amazon
2 Nutrivein Liposomal Vitamin C High Absorption Capsules Nutrivein 9.9 4.7 (20,139) Buy on Amazon
3 Nature Made Vitamin C 1000 mg Immune Support Tablets Nature Made 9.9 4.7 (16,826) Buy on Amazon
4 Solgar Ester-C Plus Vitamin C Ascorbate Complex Solgar 9.9 4.8 (3,691) Buy on Amazon
5 American Health Ester-C Vitamin C with Citrus Bioflavonoids Ester-C 9.9 4.8 (4,844) Buy on Amazon
6 ForestLeaf Liposomal Vitamin C 1000mg Capsules ForestLeaf 9.9 4.8 (1,512) Buy on Amazon
7 American Health Ester-C Vitamin C with Citrus Bioflavonoids Ester-C 9.9 4.8 (2,244) Buy on Amazon
8 American Health Ester-C Vitamin C with Citrus Bioflavonoids American Health 9.8 4.7 (1,053) Buy on Amazon
9 Ester-C 24 Hour Vitamin C Immune Support Ester-C 9.8 4.7 (7,198) Buy on Amazon
10 Solgar Quercetin Complex with Ester-C Plus Solgar 9.8 4.7 (3,358) Buy on Amazon
11 American Health Ester-C Vitamin C with Bioflavonoids American Health 9.8 4.8 (260) Buy on Amazon
12 American Health Ester-C Vitamin C with Bioflavonoids American Health 9.8 4.8 (129) Buy on Amazon
13 Solgar Ester-C 1000 mg Vitamin C Supplement Solgar 9.8 4.8 (422) Buy on Amazon
14 American Health Ester C with Citrus Bioflavonoids American Health 9.8 4.6 (3,624) Buy on Amazon
15 Solgar Ester-C Plus Vitamin C with Citrus Bioflavonoids Solgar 9.7 4.7 (165) Buy on Amazon
16 Solgar Ester-C Vitamin C with Citrus Bioflavonoids Solgar 9.7 4.7 (202) Buy on Amazon
17 Ester-C® 500 mg Veg. Tablets 225 Ester-C 9.7 4.7 (798) Buy on Amazon
18 Source Naturals Ascorbyl Palmitate Vitamin C Supplement Source Naturals 9.5 4.6 (98) Buy on Amazon
19 America Medic & Science Rapid-C Vitamin C Supplement America Medic & Science 9.5 4.5 (104) Buy on Amazon
20 Solgar Ester-C Plus Vitamin C Ascorbate Complex Solgar 9.5 4.5 (404) Buy on Amazon
21 BulkSupplements.com Ascorbyl Palmitate Vitamin C Ester Powder BULKSUPPLEMENTS.COM 9.3 4.3 (175) Buy on Amazon
22 Solgar Ester-C Plus Vitamin C Ascorbate Complex Solgar 9.1 4.6 (89) Buy on Amazon
23 Solgar Ester-C Plus 1000 mg Vitamin C Solgar 9.0 4.7 (85) Buy on Amazon
24 American Health Ester-C 250 Mg with Citrus Bioflavonoids, Be American Health 6.3 4.4 (38) Buy on Amazon
25 Ester_C Vitamin C 1000mg 24 Hour Immune Support Maximum Stre Ester_C 5.2 5.0 (3) Buy on Amazon
26 Ester-C 500mg Vitamin C Immune Support Tablets Ester-C 0.0 0.0 Buy on Amazon
27 Ester-C 1,000 mg Vitamin C Coated Tablets Ester-C 0.0 0.0 Buy on Amazon
28 American Health Ester-C 1000 mg with Citrus Bioflavonoids American Health 9.9 4.9 (229) Buy on Amazon
29 Pure Encapsulations Ester-C and Flavonoids Supplement Pure Encapsulations 9.8 4.8 (886) Buy on Amazon
30 aSquared Nutrition Vitamin C Liposomal Complex aSquared Nutrition 9.7 4.7 (908) Buy on Amazon