Best Oil Flavonoids in 2026

SUSTAINED RELEASE: NOW Vitamin C-1000 was specially formulated to provide a sustained release of vitamin C, known for its vital role in the immune system*

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

WITH ROSE HIPS: Added source of vitamin C!

100% natural vitamin C from organic berries including camu camu, acerola & amla

Contains only natural vitamin C, NO added synthetic ascorbic acid

Helps bolster your healthy immune system; provides protective antioxidant activity; offers extra support during the winter months and pollen season

Max Potency! 1000 Mg Quercetin

120 Veggie Capsules

Vegan. Single Ingredient Supplement

✔️A POTENT COMBINATION TO BOOST THE IMMUNE SYSTEM.* Quercetin is a flavonoid (plant pigment) naturally found in fruits and vegetables. It is found in many foods, such as red wine, onions, green tea, apples, berries, and more. It is known for its Anti-oxidant Properties. *Quercetin Supplements by Gade Nutrition are 1000mg per serving. Now with finest ingredients including a proprietary blend of Quercetin, Bromelain, Vitamin C, D, and zinc.*

✔️THE KEY BENEFITS:* Quercetin with bromelain supports healthy aging, helps to reduce the damage and irritation caused by free radicals, helps promote a normal respiratory function, helps to fuel the immune system, and helps enhance the absorption of zinc.*

✔️ANTI-OXIDANT PROPERTIES.* Quercetin helps to lower the release of histamines,* A compound that is released by cells in response to allergic reactions, one of the most abundant antioxidants in the diet and plays an important role in helping your body combat free radical damage.* Quercetin 500 Mg is offered in Veggie Capsules to suit most diet preferences, promoting general health & well-being*

OUTSTANDING VALUE: Our Organic Milk Thistle contains 7500 mg strength per capsule AND 120 capsules per bottle – an amazing value! A single bottle contains up to a 4-month supply. Compare this to other leading brands that require 2 capsules per serving, do not provide a 7500 mg strength dosage, and are not Certified USDA Organic. Our Organic Milk Thistle is a bargain not be found elsewhere!

30:1 EXTRACT FOR MAXIMUM STRENGTH DOSAGE: Our Organic Milk Thistle is made from a potent, concentrated 30:1 extract. A 30:1 extract means that the herb itself has been condensed, so that 30 grams of the original herb are concentrated into a single gram. By using a 30:1 extract, we have created a powerful supplement that is 30X stronger than standard Milk Thistle capsules.

80% SILYMARIN FLAVONOIDS: The "good stuff" in Milk Thistle is called Silymarin Flavonoids. The more Silymarin Flavonoids, the better the Milk Thistle! Our Organic Milk Thistle has been standardized to 80% Silymarin Flavonoids, which means that each capsules contains 200 mg of Silymarin Flavonoids from a 30:1 extract - the highest dosage available!

MAX STRENGTH QUERCETIN: aSquared Nutrition’s maximum strength Quercetin formula contains 500mg of Quercetin powder per capsule and 200 vegetable capsules per bottle for a full 200-day supply. Quercetin is a plant pigment flavonoid that is naturally found in berries, broccoli, and leafy greens. Quercetin is a powerful antioxidant and free radical scavenger that helps protect the body from cell membrane damage & DNA alterations. *

FEEL THE DIFFERENCE: Quercetin is a powerful antioxidant. Quercetin supplementation may support immune and skin health, and cardiovascular health. Additionally, Quercetin helps fight allergies, supports circulation, supports mood & energy levels, and may help protect your kidneys, brain & liver. *

POWERFUL ANTIOXIDANT: Flavonoids such as Quercetin are free radical scavengers that fight off oxidation. Diets high in Quercetin may help combat cognitive impair & allergies. *

Elderberry has traditionally been considered a medicinal plant. It can support a strong immune system and may even alleviate respiratory conditions such as cold and cough. High in flavonoids, elderberries are thought to reduce the risk of heart disease and are beneficial in lowering blood pressure and managing diabetes.

Organic elderberries can gently eliminate constipation and boost the gastrointestinal system for peak performance. Cook or steep dried elderberries to create a versatile elixir for jams, jellies, chutneys, pies, juices, wines, tinctures, syrups and sauces. Why use elderberry powder?

The sambucus plant is regarded for its ability to slow the aging process. It is thought to reduce the appearance of wrinkles and age spots, while promoting bone strength and new bone tissue development.

NATURAL IMMUNE SUPPORT - Cultivate your kids’ natural immune defenses with elderberry gummies for kids. Our triple kids immune support formula provides the perfect combination of real elderberry, vitamin c, and zinc.

TRADITIONAL WELLNESS REMEDY - Draw on centuries of wisdom with authentic black elderberry for kids! This berry has been safely used in folk medicine to boost immunity and fight off illness since the time of the Ancient Greeks.

YUMMY GUMMIES - Your child will love the delicious berry flavor of our elderberry gummies with zinc and vitamin c. No more bribing and bargaining to get them to take their vitamins… in fact, they’re so yummy they’ll be reminding YOU it’s time for their daily immune-boosting treat!

Supports Antioxidant Status: Quercetin is a phenolic antioxidant found in green leafy vegetables, onions, apples and cherries.

Cardiovascular Health: Quercetin supports cardiovascular health by supporting blood vessel endothelial cellular integrity and function.

Immune Health: Quercetin has been shown to be one of the most bioactive flavonoids that supports a healthy immune system response.

For Urinary Tract Health: Maintain a healthy urinary tract with CranCap, a convenient once-daily capsule made with powerful 36mg PACs from whole cranberry extract. Multiple scientific human studies show that 36mg of PAC is the optimal dose to promote & maintain urinary tract health. A natural solution to the pain, burning, urgency and hopelessness caused by UTIs, CranCap is here to help keep your urinary tract clean. 30 capsules.

Powered by Cranberries: PACs, or proanthocyanidins, are flavonoids found in North American cranberries. PACs have powerful antiadhesion benefits, working within your body to prevent UTI sources from sticking to cell walls within your urinary tract. Not all PACs are created equal! CranCap contains 36mg of PACs.

Stop UTIs Before They Start: In a 24-hour period, 1 CranCap Capsule has the same amount of PACs (and none of the sugar) found in 3-4 servings of cranberry juice. It also provides antioxidants for the maintenance of overall good health. CranCap’s residual effects can last up to 36 hours, but for maximum efficiency, take one capsule every 24 hours.

OUTSTANDING VALUE: Our Organic Milk Thistle contains 7500 mg strength per capsule AND 280 capsules per bottle – an amazing value! A single bottle contains up to a 9-month supply. Compare this to other leading brands that contain far few capsules, are not Certified USDA Organic, and do not provide a 7500 mg strength dosage. Our Organic Milk Thistle is a bargain not be found elsewhere!

30:1 EXTRACT FOR MAXIMUM STRENGTH DOSAGE: Our Organic Milk Thistle is made from a potent, concentrated 30:1 extract. A 30:1 extract means that the herb itself has been condensed, so that 30 grams of the original herb are concentrated into a single gram. By using a 30:1 extract, we have created a powerful supplement that is 30X stronger than standard Milk Thistle capsules.

USDA CERTIFIED ORGANIC: Our Organic Milk Thistle is derived from an all-natural, vegan, non-GMO source, and meets the strict organic standards of the USDA. While other competing products use various chemicals as fillers, binders, and excipients, our Organic Milk Thistle instead uses a unique blend of certified organic ingredients. One of these ingredients, Organic Acacia Powder, provides the added benefit of being a prebiotic, which feeds and encourages the growth of healthy probiotics.

Contains a combination of Quercetin, identity-preserved (IP) Vitamin C, Rose Hips, acerola, citrus Bioflavonoids, Hesperidin, rutin and pineapple bromelain in vegetable capsules

Antioxidant protection healthy immune function

90 vegetable capsules, 45 servings

NATURAL IMMUNE SYSTEM SUPPORT: Wiseceutical’s Organic Black Elderberry aids in shielding the body and naturally supports the immune system.

POTENT IMMUNE SUPPORTING INGREDIENTS: Elevate your immunity with Wiseceutical's Organic Elderberry Shield - packed with powerful, USDA organic certified ingredients. This potent supplement combines antioxidant-rich organic sambucus elderberry, immune-boosting natural Vitamin C from organic black currant, and the added strength of organic echinacea. With a powerhouse formula to support your immune system all year round.

RICH IN ANTIOXIDANTS: Containing high levels of flavonoids, our Organic Black Elderberry is rich in antioxidants that protect cells against damage caused by free radicals.

PROVIDES 15+ SERVINGS OF FRUITS & VEGETABLES IN EVERY SCOOP!: Greens First is a complete phytonutrient and antioxidant supplement that works synergistically in your body providing 49 different super foods, extracts and concentrates including super-greens, organic fruits & vegetables, probiotics, soluble and insoluble fibers, herbs, spices, natural flavonoids and digestive enzymes.

FILL THE GAP BETWEEN WHAT YOU EAT & WHAT YOU SHOULD EAT: That's where Greens First can help! Greens First is the best tasting and Non-GMO complete phytonutrient and antioxidant supplement that works synergistically in your body so you can be sure you are getting phytonutrients, antioxidants, and more that your body needs every day!

GET THE BENEFIT OF POUNDS OF FRUITS, VEGETABLES & HERBS IN EVERY SCOOP: It's good to eat your fruits and vegetables, but drinking them is even better! When you stir Greens First powder into pure, cold water, it's not only delicious, refreshing and energizing, you are helping yourself to maintain a highly alkaline body, which is essential for optimum health and well-being.

USDA Organic Spirulina Tablet from Spirulina Powder Organic (Arthrospira Platensis), 3000mg Per Serving, 720 Counts (4 Months Supply), Green Algae Super Food, Vegan Friendly, Filler Free, Irradiation Free, Easy to Swallow.

Loaded with Vegan Protein, Chlorophyll, Fiber, Amino Acids (Omega 3 6 9, GLA, Arginine), Fatty Acids, Immune Vitamins (Vitamin A, Vitamin B2, Vitamin B12, Vitamin C, Vitamin K, Biotin), Minerals (Magnesium, Calcium, Potassium & Zinc Vitamin), Flavonoids, Phytonutrients and Antioxidants.

Powerfully Supports Energy, Colon Health, Digestive Function and Immune System.

HIGH QUALITY SILYMARIN CONTENT: FarmHaven has formulated highly potent Milk Thistle (silybum marianum) capsules containing extract that is standardized to 80% Silymarin flavonoids, the “good stuff” in Milk Thistle. This means each capsule contains 300mg of pure Silymarin.

SUPPORTS HEALTHY LIVER FUNCTION*: The Silymarin found in Milk Thistle provides a natural way to support healthy liver function.* Silymarin helps support cell health and function and promotes a healthy inflammatory response.*

POTENT 30:1 CONCENTRATION: FarmHaven’s seed extract content means you’re choosing a high strength and high purity product that’s also good for the earth. Our Milk Thistle pills contain a 30:1 concentrate extract so each capsule actually delivers the equivalent of 11,250mg raw Milk Thistle seed for improved bioavailability and absorption.*

Micro Ingredients superior absorbing broken cell wall chlorella powder. A high concentrated natural superfood powder that uses pure vegan friendly ingredients and is created with raw, organic chlorella that is treated under low temperature only and non-irradiated for superior quality. Designed to retain almost all of chlorella’s full spectrum nutrient dense profile.

Extremely nutritious chlorella product that is rich in essential nutrients like complete vegan protein from chlorophyll, fiber, vitamin C & D, antioxidants, flavonoids, polyphenols, enzymes, GLA, and minerals. Working as on overall adaptogen for the entire body with benefits for immune support, natural energy, body odor control, digestion aid, colon health, and more!

If you are looking for healthy things to add to smoothies, then Micro Ingredients convenient plant based chlorella powder will do the job. Each bag contains 10oz of fresh chlorella powder that equals up to 76 servings. Take it in the morning, throughout the day, or before bed to enjoy one of the most nutritious healthy foods on the planet.

➕ Source of Antioxidants - Quercetin is found in grapes and berries, which are flavonoids that has antioxidant properties. Antioxidants are essential for overall health and wellness.* And, our Quercetin dihydrate powder, a quercetin supplement, to your daily routine for a daily dose of antioxidants!*

🟠 Boosts Immune Health - Quercetin, or Quercetin dihydrate, is one of the antioxidants available as supplements. Supplementing with our Quercetin Dihydrate powder or Quercetin powder, an antioxidants supplement, may help support and fortify the immune system, making it an ideal addition to anyone who leads a healthy lifestyle!*

✨ Pure, Vegan & Gluten Free - Our Quercetin dihydrate powder are pure and clean supplement, as well as it's gluten free, soy free, and dairy free. Add our Quercetin powder, one of our antioxidant supplements, in your diet and routine. Not only that it's pure, our supplement does no contain added sugars!

𝗧𝗜𝗠𝗘𝗗-𝗥𝗘𝗟𝗘𝗔𝗦𝗘 𝗜𝗠𝗠𝗨𝗡𝗜𝗧𝗬 𝗖𝗢𝗠𝗣𝗟𝗘𝗫: Strengthen your body's natural defenses with our super blend of 50mg ZINC, VITAMIN C, and VITAMINS B2 & B6. Unlike quick-release zinc supplements, our capsules deliver nutrients GRADUALLY OVER 16 HOURS. This provides consistent support for your immune system.

𝟭𝟵% 𝗠𝗢𝗥𝗘 𝗣𝗢𝗧𝗘𝗡𝗧 𝗭𝗜𝗡𝗖 𝗖𝗜𝗧𝗥𝗔𝗧𝗘: To cut costs, other brands formulate with weak forms of zinc, such as sulfate or oxide. We use zinc citrate in our zinc vitamins for adults. It’s HIGHLY CONCENTRATED and 19% more bioavailable than weaker forms, which ensures MAXIMUM NUTRIENT ABSORPTION.

𝟰𝟬% 𝗠𝗢𝗥𝗘 𝗕𝗜𝗢𝗔𝗩𝗔𝗜𝗟𝗔𝗕𝗟𝗘 𝗩𝗜𝗧𝗔𝗠𝗜𝗡 𝗖: Similar supplements contain 1000mg+ doses of vitamin C, which can cause stomach upset. Plus, studies show that, in higher doses, <50% of vitamin C is absorbed. We use 100mg ascorbic acid, vitamin C’s purest form, for up to 90% ABSORPTION, and no gut irritation.

Probiotics for Women & Men: Our 100 Billion CFU probiotics contains 35 Strains probiotics, 5 Prebiotics, 7 Digestive Enzymes and Citrus Bioflavonoids, two capsules for daily life. This probiotic is selected for adults men and women, the most abundant strains and the most beneficial probiotic supplements to support your gut health. Our probiotics contains Lactobacillus acidophilus, paracasei, brevis, and bulgaricus as well as Bifidobacterium, lactis and longum to support your digestive health

Probiotics, Prebiotics & Digestive Enzymes: In order to maximize the utility of our probiotics for digestive health, we added a variety of supplements - 35 strains probiotics, organic fiber mixture prebiotics, digestive enzymes and Citrus flavonoids, help to rebuild the intestinal and bacteria environment. Our probiotic is beneficial to relieve* gas, bloating, constipation and help to support intestinal and immune system

Probiotics for Overall Health: We've added citrus flavanones into our probiotics which are natural extracts that are good for your overall health. They can help your body to fight cell-damaging free radicals, and immune support & respiratory support, also it is benefical for your daily life metabolism and improve your overall health. It is RAW, No GMOs, Gluten, Sugar, Soy, Yeast, Egg, Wheat, Corn, Peanuts, Fish, Shellfish, Dolomol, Artificial Ingredients, Fillers, Binders, or Preservatives

Year Round Support: This ideal formulation combines 500 mg of quercetin, 50 mg of bromelain & 1,235 mg of vitamin C to help support healthy immune function and your body’s ability to cope during seasonal changes.

Perfect Pair: While bromelain is believed to help enhance the body’s ability to utilize quercetin, both may help enhance the antioxidant activity of the other.

Big Boost: Our formula is especially designed to help support healthy sinus and respiratory function, collagen synthesis, cardiovascular health, cartilage and bone development, and nerve impulse transmission

Micro Ingredients superior absorbing broken cell wall chlorella tablets. A high concentrated natural superfood that uses pure vegan friendly ingredients and is created with raw, organic chlorella that is treated under low temperature only and non-irradiated for superior quality. Designed to retain almost all of chlorella’s full spectrum nutrient dense profile.

Extremely nutritious chlorella product that is rich in essential nutrients like complete vegan protein from chlorophyll, fiber, vitamin B, C & D, antioxidants, flavonoids, polyphenols, enzymes, GLA, and minerals. Working as on overall adaptogen for the entire body with benefits for immune support, natural energy, body odor control, digestion aid, colon health, and more!

Convenient plant based support that replenishes the body with vital daily greens. Each of Micro Ingredients chlorella bags hold a 3000mg dose of this powerful plant, with 720 total tablets and up to a 4 months supply. Take it in the morning, throughout the day, or before bed to enjoy one of the most nutritious healthy foods on the planet.

600mg Quercetin + 600mg Nettles - Two plant extracts that have been shown to support the immune system and the body’s natural inflammatory response upon exposure to environmental challenges.*

Quercetin is a flavonoid found in many foods that works to promote a healthy inflammatory response.*

Nettles have a high vitamin C content underlying its immune-supportive and antioxidant properties that may also benefit a normal inflammatory response.*

PREMIUM IMMUNE SUPPORT: Our organic elderberry gummies combines the health benefits of Black Elderberry Extract, Echinacea Extract, which can better strengthen body's natural defenses, boost immunity. These organic elderberry syrup are rich in antioxidants and high potency, which can provide you and your family with the protection you need.

STRENGTHEN ANTI-OXIDATION: One study has proved that organic black elderberry boosted anti-oxidation ​is three times faster than a regular herbal supplement. For optimal protection all year-round, you can chew 1- 2 sambucus elderberry gummies vitamins per day to help our body remain balanced and defend naturally.

MOST VALUABLE BIOACTIVES: EnvyCure vegan elderberry gummies are made from the European black elderberry extract to ensure you can get a higher content and all-natural flavonoids, which are the most valuable antioxidants and phytochemicals in elderberry. Each serving elderberry gummies contains 150mg of elderberry extract, which is standardized to 25% anthocyanin (potent flavonoid BioActives) to ensure you get better immunity compared with other elderberry supplements.

✔ 300MG ECHINACEA EXTRACT - As a natural and effective herbal supplement, echinacea has become the top choice for most people to boost the immune system. In the form of cute and delicious gummies, the echinacea immune support supplement effectively helps people experience its effects faster.

✔ 100MG ELDERBERRY EXTRACT - EnvyCure echinacea gummies are rich in potent elderberries, which contain procyanidins, polyphenols and flavonoids. Provides daily antioxidant support to help your body maintain its natural defenses. Take 2 echinacea elderberry gummies daily for optimal protection.

✔STRENGTHEN YOUR IMMUNE SYSTEM - Contains powerful antioxidant Vitamin C, essential trace mineral Zinc and turmeric extract for daily supplementation needs. Chewable echinacea elderberry with zinc and vitamin c for adults and kids, high potency and convenience!

Double Strength Cranberry Concentrate with Acerola Capsules (Organic Cranberry Supplement), Equivalent to 36,000mg of Fresh Cranberries, 180 Vegan Capsules, Canada Grown and Non-GMO.

Wild Cranberry is a Traditional Herb Grown in North America and Rich in Antioxidants, Natural Vitamin C, Polyphenols, Flavonoids and Quercetin.

Supports Urinary Tract Cleanse in Women and Prostate Health in Men.

Extended Supply for Long-lasting Immune Support – Each jar of our Purify Life sambucus elderberry gummies for kids brims with 60 servings, ensuring a continuous 2-month supply. This means your child gets sustained immune support, making our offering twice as beneficial as other leading brands on the market.

Triple-action Antioxidant Blend – Our elderberry chews go beyond the ordinary with a potent blend of elderberry, zinc, and vitamin C. This unique combination delivers a powerful punch of antioxidants and flavonoids, supporting your child's immune system to naturally combat common colds, coughs, sniffles, itchy throat, congestion, flu and maintain optimal health & respiratory function.

Safe & Enjoyable for All Ages – With a texture designed for easy chewing and swallowing, these gummies are ideal for infants, toddlers, kids, and even teenagers. This vegan, sambucus black elderberry isn't just immune support—it's also a treat that your entire family will appreciate, making daily supplementation a breeze.

🍋 ONLY ORGANIC CERTIFIED, NO FILLERS, VEGAN, GLUTEN FREE & NON-GMO- Are you concerned with what goes into your body? So are we! Our Pure Bergamot extract is the only organic certified available bergamot supplements. No nasties used on the natural fruit or in production. Filler & Binder free pill capsules.

🌱 NATURAL SUPPORT – Naturally promoting a healthy lifestyle*. The positive effects of Citrus Bergamot capsules are extensively researched. Take a natural approach to supporting your health. This ancient citrus fruit is primarily cultivated in Italy, France and a few small regions around the world.

🌱 HIGHEST 50% POLYPHENOLS, USA 3rd Party Tested- To ensure the highest Polyphenols available on the market, our organic citrus bergamot formula is manufactured & 3rd party tested right here in the US. Our current batch is a high 63% Polyphenol. Others brands is on average of 38 percent.

Sustainably US Grown, Organic Cranberry Concentrate Juice Powder, 8 Ounce, Wild Cranberry Powder Organic, Water Soluble and Cold Pressed, No GMOs and Vegan Friendly.

Rich in Immune Vitamins (Vitamin B2, Vitamin B12, Vitamin C and K), Amino Acids, Fibers, Minerals (Calcium, Magnesium, Potassium and Zinc Vitamin), Flavonoids, Polyphenols, Enzymes and Antioxidants.

Powerfully Supports Urinary Tract (UTI), Digestive Health and Healthy Immune Response, Pet Friendly.

OUTSTANDING VALUE: Our Milk Thistle 50:1 Extract contains 20,000 gm strength per capsule AND 200 capsules per bottle – an amazing value! A single bottle contains more than a 6-month supply. Compare this to other leading brands that contain far less than 200 capsules, require 2 capsules per serving, do not provide a 20,000 mg strength dosage, and do not contain Organic Milk Thistle. Our Milk Thistle 50:1 Extract is a bargain not be found elsewhere!

50:1 EXTRACT FOR MAXIMUM STRENGTH DOSAGE: Our Milk Thistle 50:1 Extract is made from a potent, concentrated 50:1 extract. A 50:1 extract means that the herb itself has been condensed, so that 50 grams of the original herb are concentrated into a single gram. By using a 50:1 extract, we have created a powerful supplement that is 50X stronger than standard Milk Thistle capsules.

MADE WITH ORGANIC MILK THISTLE: Any Thistle that is not organic can be highly contaminated and even toxic to your liver. Because our Milk Thistle 50:1 Extract contains certified organic Milk Thistle, you can be sure your Milk Thistle is contaminant-free, pure, all-natural, vegan, and non-GMO.