10 Best Vitamin C Buffered 500 Mg of 2025

Tested and Reviewed: Top 10 Vitamin C Buffered 500 Mg deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Vital Nutrients

Vital Nutrients Buffered Vitamin C 500mg - Vegan Gentle Vitamin C for Sensitive Individuals* - Immune Support Supplement* - Gluten, Dairy and Soy Free - Non-GMO - 220 Capsules

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Editor's bottom line:

“This vitamin c buffered 500 mg is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Gentle Form Of Vitamin C: High potency Vitamin C in a gentle formula for sensitive individuals.* 500mg per capsule allows customized dosing for optimal absorption and GI tract comfort.*
Supports A Healthy Immune System: Ascorbic acid supports the immune system by promoting normal antibody responses and white blood cell function.*
Clean Vegan Formula. Hypoallergenic and Non-GMO. Made without artificial fillers, coatings, binders, or colors.
Quality You Can Rely on: Our rigorous quality assurance program includes third-party independent laboratory testing of raw ingredients and finished products for purity and potency to ensure whats on the label is in the bottle.
We test every ingredient we use and every finished product we make. FDA regulation (GMP Part 111) requires that manufacturers test ingredients and finished products. However, it allows manufacturers to perform minimal skip lot testing meaning only some of the ingredients are tested. Vital Nutrients has always exceeded these testing requirements by performing a significant number of additional tests on raw ingredients and finished products at independently certified U.S. labs. Labels may vary.

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Picked by 397 people today

9.5

365 by Whole Foods Market

365 by Whole Foods Market, Buffered Vit C w/Bioflavonoids 500 MG, 180 CT

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Main Highlights

180 vegetarian capsules of buffered vitamin C complex
Important antioxidant supporting overall health
An Amazon brand

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9.5

NOW Foods

NOW Foods Supplements, Vitamin C-500 Calcium Ascorbate, Antioxidant Protection*, 250 Veg Capsules

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Main Highlights

ANTIOXIDANT PROTECTION: NOW C-500 Calcium capsules provide a daily dose of vitamin C, which is necessary for the production of collagen and is therefore also important for skin, bone, and joint health.
CALCIUM ASCORBATE-C WITH BIOFLAVONOIDS: This product supplies calcium ascorbate, a buffered form of vitamin C that is bioavailable and non-acidic; it is enhanced with bioflavonoids, which work synergistically with vitamin C.
CERTIFICATIONS/CLASSIFICATIONS: Quality GMP Assured, Non-GMO, Soy Free
GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation).
Packaged in the USA by a family owned and operated company since 1968

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9.2

Ester-C

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

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Main Highlights

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

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9.0

BlueBonnet

Bluebonnet Buffered Vitamin C 500 mg Vegetable Capsules, 90 Count, White (743715005686)

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Main Highlights

Formulated with 500 mg of identity-preserved (IP) Buffered Vitamin C & Citrus Bioflavonoids and Rutin
Immune Health
90 Vegetable Capsules, 90 Servings
Soy-Free, Gluten-Free, Non-GMO, Kosher Certified, Dairy-Free, Vegan
Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame. Also free of gluten, barley, rice, sodium and sugar.

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8.8

Country Life

Country Life Vitamin C Buffered with Bioflavonoids, 500mg, 250 Tablets, Certified Gluten Free, Certified Vegan

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Main Highlights

Dietary supplement
Has been prepared with natural alkaline Calcium Carbonate and Magnesium Oxide
Neutralize the excess acidity of Vitamin C

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8.6

Pure Encapsulations

Pure Encapsulations Buffered Ascorbic Acid Capsules | Vitamin C for Sensitive Individuals* | 90 Capsules

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Main Highlights

For Sensitive Individuals: Buffered ascorbic acid combines calcium ascorbate, magnesium ascorbate, and potassium ascorbate to create a neutral pH vitamin C.*
Lessens Gastric Irritation: This special form of ascorbic acid lessens possible gastric irritation in sensitive individuals.*
Antioxidant Support: Vitamin C offers a wide range of support for the human body, and it is an antioxidant and free radical scavenger.*
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.

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8.3

SOLARAY

SOLARAY Buffered Vitamin C 500mg - with Bioflavonoids, Rose HIPS and Acerola Cherry - Immune Support Supplement - Easy to Digest, Vegan, Lab Verified, 60-Day Guarantee - 250 Servings, 250 VegCaps

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Main Highlights

Your Wellness Vitamin 500mg of Vitamin C may help support immune health and antioxidant processes in the body for healthy cells. We've included rose hips, acerola cherry, rutin and hesperidin for added support!
Collagen and Joint Health Support Vitamin C (as Ascorbic Acid) and bioflavonoids may help support collagen synthesis for healthy, strong joints and vibrant hair skin and nails.
Gentle Digestion -- Buffered with Calcium and Magnesium, our Vitamin C supplement is gentle on the stomach and easier to digest than other forms of vit C.
Eco-Friendly: We use 100% PCR bottles made from plastic removed from oceans & landfills.
Trusted Brand Made in our GMP-certified facility, tested in our own state-of-the-art lab in Utah to bring you the best possible quality, our vegan Vitamin C capsules always include a 60-Day Money-Back Guarantee.

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8.1

SOLARAY

SOLARAY Buffered Vitamin C 500mg - with Bioflavonoids, Rose HIPS and Acerola Cherry - Immune Support Supplement - Easy to Digest, Vegan, Lab Verified, 60-Day Guarantee - 100 Servings, 100 VegCaps

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Main Highlights

Your Wellness Vitamin 500mg of Vitamin C may help support immune health and antioxidant processes in the body for healthy cells. We've included rose hips, acerola cherry, rutin and hesperidin for added support.
Collagen and Joint Health Support Vitamin C (as Ascorbic Acid) and bioflavonoids may help support collagen synthesis for healthy, strong joints and vibrant hair skin and nails.
Gentle Digestion Buffered with Calcium and Magnesium, our Vitamin C supplement is gentle on the stomach and easier to digest than other forms of vit C.
Eco-Friendly: We use 100% PCR bottles made from plastic removed from oceans & landfills.
Trusted Brand Made in our GMP-certified facility and tested in our own state-of-the-art lab in Utah to bring you the best possible quality, our vegan Vitamin C capsules always include a 60-Day Money-Back Guarantee.

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8.1

Integrative Therapeutics

Integrative Therapeutics Buffered Vitamin C - Antioxidant Support Supplement for Healthy Skin & Connective Tissues* - Vegan & Gluten-Free - 60 Capsules (60 Servings)

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Main Highlights

Immune Support Supplement*: Buffered Vitamin C provides 1,000 mg of vitamin C per capsule to offer antioxidant support and to support a healthy immune system*
Skin Health Support Supplement*: This well-tolerated vitamin C formula supports healthy skin, collagen, and connective tissue*
Skin Support Supplement*: For healthy skin support, take 1 capsule daily or as recommended by a healthcare professional*
Vegan & Gluten-Free: Buffered Vitamin C contains no salt, wheat, gluten, soy, dairy, or artificial colors, or flavors
About Integrative Therapeutics: For over 25 years, patients and clinicians have trusted us for our dedication to quality, potency, and accuracy; transparency around our sourcing and manufacturing processes is part of our quality promise to you

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Our Best Overall Choice

Best Choice

9.7

Vital Nutrients

Vital Nutrients Buffered Vitamin C 500mg - Vegan Gentle Vitamin C for Sensitive Individuals* - Immune Support Supplement* - Gluten, Dairy and Soy Free - Non-GMO - 220 Capsules

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Gentle Form Of Vitamin C: High potency Vitamin C in a gentle formula for sensitive individuals.* 500mg per capsule allows customized dosing for optimal absorption and GI tract comfort.*
Supports A Healthy Immune System: Ascorbic acid supports the immune system by promoting normal antibody responses and white blood cell function.*
Clean Vegan Formula. Hypoallergenic and Non-GMO. Made without artificial fillers, coatings, binders, or colors.
Quality You Can Rely on: Our rigorous quality assurance program includes third-party independent laboratory testing of raw ingredients and finished products for purity and potency to ensure whats on the label is in the bottle.
We test every ingredient we use and every finished product we make. FDA regulation (GMP Part 111) requires that manufacturers test ingredients and finished products. However, it allows manufacturers to perform minimal skip lot testing meaning only some of the ingredients are tested. Vital Nutrients has always exceeded these testing requirements by performing a significant number of additional tests on raw ingredients and finished products at independently certified U.S. labs. Labels may vary.

Show Price

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