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Healthy Directions Vitamin C
Expired
Nature Made Vitamin C
None
Dr. Mercola Liposomal Vitamin C
None
Solgar Ester-C Plus
None
Nature's Bounty Vitamin C-500
None
Kirkland Signature Vitamin C
None
Nature's Way Vitamin C-1000
None
Twinlab C-1000 Caps
None
Spring Valley Vitamin C
None
Solaray Vitamin C
None
Puritan's Pride Premium C-1000
None
Spring Valley Chewable Vitamin C
None
Doctor's Best Vitamin C
None
Country Life Buffered Vitamin C
None
Natural Factors Vitamin C Fruit Chews
None
Garden of Life Vitamin Code Raw Vitamin C
None
Nature Made Adult Gummies Vitamin C
None
Nature's Way Alive Vitamin C
None
Child Life Essentials Liquid Vitamin C
None
Vitafusion Power C
None
Labdoor analyzed 21 best-selling vitamin C supplements in the United States for vitamin C content and heavy metal (arsenic, cadmium, lead, mercury) contamination.
The majority of products (17 of 21) recorded vitamin C content within 10% of their label claims. However, 3 products deviated off their claims by at least 30%. Products ranged from having 60% less to 74% more than their label claims.
The lowest measured vitamin C level fell below the recommended daily allowances (RDAs) of 90 and 75 mg/day for men and women, respectively, needed to protect against vitamin C deficiency. The highest measured vitamin C level exceeded the established Tolerable Upper Intake Level (UL) of 2000 mg/serving for safe vitamin C intake.
All tested products passed heavy metal screens for cadmium, lead, and mercury.
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