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!

Nature's Way Sambucus Elderberry Gummies support immune health with high potency vitamin C, and an excellent source of zinc. Gummies also contain highly concentrated (64x) black elderberry extract made from 3,200 mg of elderberries per serving.

Elderberries have naturally-occurring anthocyanins, which provide antioxidant support.* Antioxidants help neutralize free radicals.* Elderberries have been used for centuries for traditional immune support you can enjoy all year long.*

Adults and children 4 years of age and older chew 2 gummies daily. Great tasting gummies for the whole family!

- Quercetin 500mg Per Serving

- 120 Servings Per Bottle, 1Veggie Capsule per Serving

- Non-GMO, Gluten Free, Third Party Tested

DAILY IMMUNE SUPPORT: Zarbee’s Kid’s Daily Immune Support* Gummies with real elderberry contain an excellent source ⱡ of vitamins A; C; D; E & zinc to help support your child’s immune system.* Can be added to your childs daily routine.

SAFE & EFFECTIVE: Our daily immune support gummies are made with concentrated real elderberry extract; known to contain nutrients; antioxidants; and flavonoids. Our children’s gummies are safe & effective for toddlers & kids ages 2+.

INGREDIENTS INSPIRED BY NATURE: Our immune support gummies are made from carefully selected ingredients inspired by nature—free of drugs; alcohol; artificial sweeteners; and high fructose corn syrup; plus are gelatin-free.

DAILY IMMUNE SUPPORT: Zarbee’s Daily Immune Support Gummies with real elderberry contain an excellent source of vitamins A, C, D3, E and zinc, which are powerful ingredients that have been clinically studied for their role in supporting the immune system.

FEATURES REAL ELDERBERRY: Our daily immune support gummies are made with real elderberry extract, known to contain nutrients, antioxidants, and flavonoids. This supplement is safe & effective for adults and kids ages 12 plus. Can be added to your daily routine.

INGREDIENTS INSPIRED BY NATURE: Our Immune Support Gummies are made from carefully selected ingredients inspired by nature—free of drugs, alcohol, artificial sweeteners, and high fructose corn syrup.

ANTIOXIDANT SUPPORT: Sports Research quercetin supplement supports antioxidant activity and seasonal immune system function. Just one (1) of our softgels provide 500 mg of quercetin, promoting antioxidant activity and an immunity health support.

CARDIOVASCULAR SUPPORT: This quercetin supplement helps support the cardiovascular system and provides heart health support.

PREMIUM INGREDIENTS: Quercetin is a polyphenolic bioflavonoid and our Quercetin capsules are the most bioavailable form there is. It’s sourced from Brazilian fava trees, then formulated with Coconut MCT Oil and Sunflower Lecithin to help aid with absorption. It is also standardized to 95% quercetin powder in the dihydrate form.

ANTIOXIDANT: Vitamin C with Bioflavonoids provides powerful antioxidant protection, supports immune function and strengthens collagen for healthy skin.*

SUPERIOR QUALITY STANDARDS: Our Vitamin C 1000 mg with Bioflavonoids is carefully tested and produced to superior quality standards.

GLUTEN-FREE: Our Vitamin C 1000 mg with Bioflavonoids is gluten free. It also contains no sugar, salt, yeast, wheat, soy, corn, dairy products, artificial colors, flavors or preservatives.

Ester-c is a breakthrough patented Vitamin C Formula supported with naturally occurring metabolites

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

Metabolites help enhance the absorption of Vitamin C by your white blood cells, an important part of your immune system

Immune Support: Get the immune-supporting and antioxidant benefits of vitamin C combined with natural citrus flavonoids

Healthy Skin: Promotes collagen production, which enhances skin, nail, and hair health

Wound Healing: Collagen production, antioxidative properties, and immune support make vitamin C an important nutrient for supporting post-surgical healing and injury repair

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

Calm and soothe anxious or aging pets with Omega-rich cat and dog hemp oil by Billion Pets. Packed with Vitamins C and E as well as other healing nutrients that work synergistically, it promotes joint mobility, shiny coat and relaxation for dogs and cats who fear loud noises or separation from owners.

Highly concentrated formula from 100% organic hemp extract speeds essential fatty acids, flavonoids, antioxidants and trace minerals to ease discomfort. By promoting joint lubrication and swelling reduction, Billion Pets Hemp Oil for cats and dogs can help pets live happy, active lives.

Veterinarian recommended pet hemp oil offers natural cat and dog relaxation. It is ideal for pets that hide or become nauseous or aggressive during travel, commotions or due to illness. Billion Pets Hemp Oil is a safe and effective calming aid for dogs and cats with no impact on personality.

Max Potency! 1000 Mg Quercetin

120 Veggie Capsules

Vegan. Single Ingredient Supplement

DAILY IMMUNE SUPPORT: Zarbee’s Kid’s Daily Immune Support* Syrup with real elderberry contains an excellent source of vitamin C; zinc & elderberry to help support your child’s immune system.* Can be added to your childs daily routine.

SAFE & EFFECTIVE: Our daily immune support syrup is made with concentrated real elderberry extract; known to contain nutrients; antioxidants; and flavonoids. Our children’s liquid is safe & effective for toddlers & kids ages 2+.

INGREDIENTS INSPIRED BY NATURE: Our great-tasting; natural elderberry flavor liquid is made from carefully selected ingredients inspired by nature—free of drugs; alcohol; artificial sweeteners; dyes; and gluten.

✔️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*

High concentrated 95% pure quercetin capsules. Natural soy-free sophora japonica source. Highest bioavailable dihydrate form. Rich source of antioxidants and flavonoids.

240 capsules per bottle. 2 capsule serving size. 1,000mg dose with 500mg per capsule. Up to a 4-month supply.

A natural herbal ingredient that provides important phytonutrients for promoting year round immune support in both men and women.

QuerceFIT Is The Most Activated Form of Quercetin - Phytosome technology is able to enhance quercetin absorption by more than 20x. Made of Sophora Japonica plant extracts to be the most bioavailable antioxidant flavonoid for rapid response to histamines.

Healthy Response To Histamines - Powerful antioxidant that supports your body's response to histamines & allergies, which helps ease and control occasional symptoms like itching, redness, runny nose, and excessive mucus for natural respiratory health.

Immune Support - Provides antioxidants to protect healthy immune cells from oxidative damage. Great potential to strengthen the immune system by promoting an effective response to harmful organisms to reduce the chances of feeling under the weather.

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. *

✅ USDA Certified Organic: Wild crafted European elderberry. Product is non-GMO, non-irradiated, free from pesticides and residuals.

✅ Benefits* - Known for their immune boosting properties, elderberries contain high levels of naturally occurring flavonoids, vitamin c, and zinc.

✅ Uses: With a sweet-tart flavor and aroma, elderberries make delicious teas, syrups, wines, and jams.

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.

LIVER HEALTH SUPPORT: Milk thistle contains flavonoids called silymarin that have traditionally been used as support for liver health. Nature's Bounty Milk Thistle Dietary Supplements provide 250mg of Milk Thistle powder per capsule

HERBAL HEALTH: Nature's Bounty provides herbal products for a variety of health areas Nature's Bounty Milk Thistle is just part of the line of traditional supplements offered to support your health and your body

NATURE'S BOUNTY, BETTER OFF HEALTHY: Health-conscious people have trusted Nature’s Bounty products for decades Our dedication to quality, consistency, and scientific research has resulted in vitamins and nutritional supplements of unrivaled excellence

Quercetin the most abundant dietary flavonoid plant pigment naturally found in fruits and vegetables

Supports cardiovascular health

60 servings per bottle

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!

FIGHT OXIDATIVE STRESS – Vitamin C helps fight oxidizing free radicals, which is good for you from your head to your toes. Quercetin does too—the only problem is absorption.Our quercetin is wrapped in a phytosome, which makes it 50 times more bioavailable than traditional quercetin.

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

ENCOURAGE HEALTHY IMMUNE FUNCTION - Quercetin and vitamin C both promote immune health: in a randomized clinical trial, quercetin encouraged a healthy immune response in physically fit older adults—and we all know how much immune challenges want a taste of 1000 mg of vitamin C.

T Cell Activator: Research shows Astragalus may activate T Cells to support immune system health

Healthy Aging Support Flavonoid; Astragalus is rich in Flavonoids and Polysaccharides to support immune system health

Manufactured in the USA, Non Gmo, Gluten Free: Double Wood's Astragalus Extract Capsules are Manufactured in the USA, Non Gmo, and Gluten Free

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. 90 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.

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.

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.

GNC Vitamin C 1000 mg - Timed-Release If you’re looking for a convenient way to receive the benefits of immune support, you can add GNC Vitamin C 1,000 mg to your daily dietary supplement regimen. This protective antioxidant is essential for healthy bones, teeth, blood vessels and collagen. Plus, these vegetarian caplets also contain bioflavonoids and rose hips, all woven within a timed-release formula. Protective antioxidant vitamin provides immune support*

Dietary supplement contains 1,000mg of vitamin C, 25mg of citrus bioflavonoids complex 4:1 and rose hips powder per serving

Vitamin C with citrus extract flavonoids may have better absorption and retention in the body

Standardized elderberry extract

Powerful immune defense

Rich in proanthacyanidins