MENU
Vitamin C Supplements Tested by ConsumerLab.comProduct Reviews
Vitamin C Supplements Review

Find the Best Vitamin C Supplement

20% Of Vitamin C Supplements Fail CL's Tests of Quality

See the report now

Brands compared in report

American Health Ester-C
Bronson Laboratories Vitamin C Crystals
CVS Pharmacy C
Dynamic Health Liquid Vitamin C for Kids - Natural Citrus Flavors
Emergen-C
Garden of Life Mykind Organics Vitamin C
GNC Vitamin C 1000
Jamieson C
Kirkland Signature (Costco) Vitamin C
Life Extension Vitamin C with Dihydroquercetin
LivOn Laboratories Lypo-Spheric Vitamin C
Metagenics Ultra Potent-C
Nature Made C
Nature's Bounty C
Nature's Bounty C-1000 mg
Nature's Plus Vitamin C
Nutrifii VinaliC
PipingRock.com Vitamin C
Rainbow Light Gummy Vitamin C Slices
Rexall Vitamin C
Shaklee Vita -C
Spring Valley [Walmart] C
Sundown Naturals Vitamin C
The Vitamin Shoppe Vitamin C 1,000 mg - Capsule
The Vitamin Shoppe Vitamin C 1,000 mg - Softgels
TwinLab C-1000 Caps
Up & Up [Target] Vitamin C
Vitacost Vitamin C
Vitafusion L'il Critters Immune C Plus Zinc & Echinacea
Vitafusion Power C
Vitamin World C-1,000 mg
Well at Walgreens Vitamin C With Natural Rose Hips

See the report now

More about this report

Many people take a vitamin C supplement believing it will improve their health or prevent disease. Will it really? Are there downsides? 

And if you take a vitamin C supplement, does the product actually contain what it says? Is it the best product in terms of quality and value? ConsumerLab.com's tests of popular vitamin C supplements revealed that 20% contained much more vitamin C than listed on their labels — a concern because too much vitamin C can have negative short-term and long-term health effects.

In this report you'll learn about the benefits of vitamin C as an essential nutrient and whether taking it as a supplement helps prevent a cold, gout, or heart disease. You'll also learn that vitamin C may cause problems, including diarrhea, cataracts, and kidney stones. 

Of course, you'll also get ConsumerLab.com's tests and comparisons of vitamin C supplements based on independent, laboratory analyses. You'll find out which products were "Approved" or "Not Approved" and why. You'll also learn which products offer exceptional quality and value - making them CL's Top Picks. Some of these cost as little as 1 or 2 cents per dose! 

You must be a member to get the full test results along with ConsumerLab.com's recommendations and quality ratings. You will get results for 15 vitamin C supplements selected for testing 
by ConsumerLab.com as well as for 16 others which passed the same testing in CL's voluntary Quality Certification Program. In this comprehensive report about vitamin C supplements you'll learn:
    • Which vitamin C supplements passed testing, and which failed
    • Which high-quality vitamin C supplements are also lowest cost
    • What vitamin C can and cannot do for your health
    • The potential advantages and differences of forms of vitamin C, such as Ester-C, sodium ascorbate, slow-release vitamin C, and liposomal vitamin C
    • The value of additional ingredients, such as bioflavonoids (e.g., quercetin, dihydroquercetin, rutin, and hesperidin)
    • The dosage of vitamin C used for different purposes
    • The potential side-effects of vitamin C and its interactions with drugs and diagnostic tests

See the report now

Related questions and answers

See the report now
THANK YOU FOR SUCCESSFULLY UPDATING YOUR EMAIL ADDRESS!

PLEASE BE AWARE that the email address is now your sign-in email address, replacing any previous username. Your password has not changed.

If you do not receive our newsletter at this new address within one week, please contact support@consumerlab.com or call us during business hours at 914-722-9149 ext. 2#

ConsumerLab.com Customer Support

THANK YOU FOR SUCCESSFULLY RESUBSCRIBING TO THE NEWSLETTER!

If you do not receive our newsletter within one week, please contact support@consumerlab.com or call us during business hours at 914-722-9149 ext. 2#

ConsumerLab.com Customer Support