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Product Review: Vitamin C Supplements

Initial Posting: 1/24/14  Last Update: 8/3/16
Vitamin C Supplements Tested by Vitamin C Not Accurately Listed on 27% of Supplements

Find Out Now If Yours Passed!

Vitamin C supplements compared in this review
Ariix Vinali Gary Null's Suprema C Strawberry Rainbow Light Gummy Vitamin C Slices
Bronson Laboratories Vitamin C Crystals GNC Vitamin C 1000 Rexall Vitamin C
ChildLife Liquid Vitamin C Halls Defense Vitamin C Strawberry Solgar Ester-C Plus
CVS Pharmacy C Kirkland Signature (Costco) Vitamin C Spring Valley C
Douglas Laboratories Ester C Plus Life Extension Vitamin C with Dihydroquercetin Trader Joe's Chewable Oranges & C
Dynamic Health Laboratories Liquid Vitamin C 1,000 mg Nature Made VitaMelts Vitamin C TwinLab C-1000 Caps
Emergen-C Nature's Plus Animal Parade Vitamin C Vitacost Vitamin C
Ester-C NutriGold Vitamin C Gold Vitafusion Power C
Finest Nutrition (Walgreen) C Vitamin Nutrilite Vitamin C Plus Vitamin World C-1000 mg
Garden of Life RAW Vitamin Code Raw Vitamin C Puritan's Pride C-1000 mg  
Make sure the vitamin C supplement you take passed our quality review and is right for you!
Isn't your health worth it?
Should you be taking a vitamin C supplement? Which are the best vitamin C supplements in terms of quality and value?

Vitamin C is an antioxidant critical for maintaining healthy connective tissue. Research shows that getting too little can be a problem, but so can getting too much. Unfortunately, our tests of vitamin C supplements found that more than 25% of the products selected for review didn't contain the amounts of vitamin C listed on their labels. Two high-dose products contained about 40% more vitamin C than listed -- which could cause side-effects for some people -- and one had 15% less than listed.

We also found that a common dose of vitamin C from a high-quality supplement can cost as little as 1 cent, or you can spend over a dollar.

In this comprehensive report about vitamin C
supplements, you'll get test results and quality ratings for 28 vitamin C products (including 17 that passed our voluntary Quality Certification Program) and information about one other vitamin C supplement similar to one that passed testing. 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 of forms of vitamin C, such as Ester-C, sodium ascorbate, and slow-release vitamin C
    • The value of additional ingredients, such as bioflavonoids (e.g., quercetin, dihydroquercetin, rutin, and hesperidin), often found in vitamin C supplements
    • The vitamin C dosage to help prevent or treat conditions such as colds, gout, and vitamin C deficiency 
    • The potential side-effects of vitamin C and other concerns, including the potential for kidney stones and interactions with drugs and diagnostic tests  

If you already are a member, SIGN IN now. Answers -- for Vitamin C Supplements
Do vitamin C supplements help prevent cataracts? Get the answer >>

Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins? Get the answer >>

I've been buying nutritional supplements in powder form, as I find them cheaper than tablets and capsules. I am concerned about the effect of air when I open the bottles daily because sometimes my powdered supplements get clumpy. Should I be concerned? Get the answer >>

After several weeks of taking a vitamin C supplement, my wife noticed blood in her urine along with difficult and painful urination. This stopped a week after discontinuing the supplement, but started again when she resumed taking the vitamin C. Could there be glass in the supplement? Get the answer >>

What is Lipo-flavonoid and does it work for tinnitus or other ear problems? Get the answer >>

Which supplements have been shown to be helpful for autism? Get the answer >>

Do any supplements help prevent sunburn or skin damage from sun exposure? Get the answer >>

Some websites claim that synthetic vitamin C in supplements may be a combination the active "L" form and the inactive "D" form of ascorbic acid. Is that true? Should I be concerned? Get the answer >>

Is liposomal vitamin C (sold as Lypo-Spheric) better than other forms of vitamin C? Get the answer >>

Is there cause for concern with "gummy vitamins?" There are many different gummies out there. Are some better than others? Get the answer >>

Is it possible to take too much vitamin C? Get the answer >>

Do any supplements help with gum disease or periodontitis? Get the answer >>

I thought the B vitamins were all water soluble and did not build up in the body, so you would not build up toxic levels. Am I wrong? Get the answer >>

Do any supplements help prevent or improve cataracts? Get the answer >>

I take estrogen replacement (Vagifem), to help relieve the symptoms of menopause. Are there supplements I should avoid, or be taking, due to this drug? Get the answer >>

Which supplements can help to lower blood pressure? Get the answer >>

Which supplements are helpful for age-related macular degeneration (AMD)? Get the answer >>

Do any supplements help for irritable bowel syndrome (IBS)? Get the answer >>

Are there negative interactions between the following supplements I take twice each day, as well as 60 mg of beta-sitosterol with dinner: Vitamin C (500 mg), CoQ10 (100 mg), grape seed extract (100 mg), fish oil (500 mg), vitamin D3/calcium/magnesium/zinc (200 IU/333 mg/113 mg/5mg)? Get the answer >>

After developing kidney stones, I was told to avoid tea -- but recently I've heard that green tea might actually be helpful for kidney stones. Is that true? Get the answer >>

Which supplements can help lower or control my blood sugar? Get the answer >>

I've been taking a Daily Advantage multi but am now concerned by the very high % DV for vitamin C (833% DV), niacin (325% DV), and B vitamins (over 1,000% DV for several). The company tells me this formula is based on clinical experience and the scientific literature. What do you think? Get the answer >>

Are the "% DV" numbers on vitamin supplement labels really based on what I need? Get the answer >>

I do moderate exercise for about an hour a few times a week. Which supplements might help me? Get the answer >>

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