vitamin

Vitamin C supplements

Half of the 18,583 vitamin C supplements in the NIH label database that print an amount list 100 mg or less per serving; the middle half list 60 mg to 270 mg, and 1 in 82 of the 18,422 with a plausible amount give more than the adult upper limit at the most servings their labels direct (DSLD version 9.4.0, January 2026). The 775 products whose only supplement ingredient is vitamin C list a median of 500 mg, and 1 in 15 of them give more than the upper limit.

How much vitamin C do supplements contain?

The median product lists 100 mg per serving. One in ten lists 21 mg or less, one in ten 750 mg or more. The amount printed most often is 60 mg (2,234 products).

How do the amounts compare with the Daily Value and the upper limit?

The FDA Daily Value for vitamin C is 90 mg (adults and children 4 and older). The median product gives 111% of it per serving; the 90th percentile 833%.

The adult Tolerable Upper Intake Level is 2,000 mg a day (total intake from food, water and supplements). At the most servings their labels direct, 224 of the 18,422 products with a plausible amount (1.2%) give more than that from the supplement alone (what counts as plausible).

The upper limit is for total intake from food, water and supplements unless stated, and does not apply under medical supervision. A label amount is what the maker printed. This is data, not advice: the NIH ODS fact sheets explain what each nutrient does.

Which products list the most vitamin C?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• Ultra Preventive Forte-Chel (Capsules)Douglas Laboratories3,000 mg
• Ultra Preventive Forte-ChelDouglas Laboratories3,000 mg
• C-500Optimox3,000 mg
• C Buffered CrystalsThompson3,000 mg
• Vitamin C 1,000 mgIndiana Botanic Gardens3,000 mg
• Anti-Alcohol Antioxidants With HepatoProtection ComplexLife Extension3,000 mg
• Mega-Liposomal Vitamin C 3000 mgAurora Nutrascience3,000 mg
• Ortho C+ Lemon FlavorAOR Advanced Orthomolecular Research Premium3,000 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 120 mg; those entered in 2025, 100 mg.

In which products and brands?

Brands listing it most: Nature's Way (366), Douglas Laboratories (330), Nature's Plus (284), ProCaps Laboratories (169), Bronson (151), NOW (144), Country Life (129), Puritan's Pride (110), Source Naturals (108), Nature Made (106).

Every product listing vitamin C

19,919 products, A to Z by name (page 124 of 399), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• EssentiaMeal Natural Vanilla FlavorDesigns for Health100 mg
• EssentiaMeal-DF Natural Vanilla FlavorDesigns for Health100 mg
• Essiac From Rene M. Caisse, RNEssiac From Rene M. Caisse, RN1 mg
• Essiac Herbal Extract FormulaEssiac · off the marketin a blend
• Essiac Herbal Supplement Extract FormulaEssiac · off the market1 mg
• Essiac Original Herbal FormulaEssiacin a blend
• Ester C +DC500 mg
• Ester C 1250 mgDC1,000 mg
• Ester C 600 mgSuperSmart · off the market7,200 mg as transcribed, likely a slip
• Ester C 9444 mgSuperSmart7,200 mg as transcribed, likely a slip
• Ester C PlusMartin Avenue Pharmacy540 mg
• Ester C Powder 2500 mgDC2,000 mg
• Ester-CAmerican Health · off the market1,000 mg
• Ester-CPuritan's Pride1,000 mg
• Ester-CKala Health790 mg
• Ester-C & FlavonoidsPure Encapsulations619 mg
• Ester-C 1000NOW1,000 mg
• Ester-C 1000 mgVitabase1,000 mg
• Ester-C 1000 mg plus D3 125 mcg (5000 IU)Puritan's Pride1,000 mg
• Ester-C 1000 mg with Citrus BioflavonoidsPhysioLogics · off the market1,000 mg
• Ester-C 1000 mg with Citrus BioflavonoidsAmerican Health1,000 mg
• Ester-C 1000 mg With Citrus Bioflavonoids Timed ReleaseAmerican Health · off the market1,000 mg
• Ester-C 1250 mgWonder Laboratories1,000 mg
• Ester-C 24 Hour Immune SupportNatureSmart1,000 mg
• Ester-C 24 Hour Immune Support 1000 mgNatureSmart1,000 mg
• Ester-C 24 Hour Immune Support 500 mgNatureSmart1,000 mg
• Ester-C 250 mgPhysioLogics · off the market250 mg
• Ester-C 250 mgAmerican Health · off the market250 mg
• Ester-C 250 mg Natural Citrus Flavord WafersPhysioLogics · off the market250 mg
• Ester-C 250 mg Orange Flavored WafersAmerican Health250 mg
• Ester-C 500 mgAmerican Health1,000 mg
• Ester-C 500 mg with BioflavonoidsPhysioLogics · off the market500 mg
• Ester-C 500 mg With Citrus BioflavoindsAmerican Health1,000 mg
• Ester-C 500 mg With Citrus Bioflavoinds Timed ReleaseAmerican Health500 mg
• Ester-C 500 mg with Citrus BioflavonoidsAmerican Health1,000 mg
• Ester-C 500 Plus BioflavonoidsBluebonnet500 mg
• Ester-C Advanced Antioxidant Formula With Whole Food ComplexAmerican Health1,000 mg
• Ester-C ComplexDouglas Laboratories490 mg
• Ester-C Effervescent 1000 mg Natural Lemon LimeAmerican Health1,026 mg
• Ester-C Effervescent 1000 mg Natural OrangeAmerican Health1,026 mg
• Ester-C Effervescent 1000 mg Natural Orange FlavorNatureSmart1,026 mg
• Ester-C Effervescent 1000 mg Natural Orange FlavorSolgar1,026 mg
• Ester-C Effervescent 1000 mg Natural RaspberryAmerican Health1,026 mg
• Ester-C Effervescent 1000 mg Natural Raspberry FlavorSolgar1,026 mg
• Ester-C Effervescent 1000 mg Plus Electrolytes Natural OrangeAmerican Health · off the market1,026 mg
• Ester-C Effervescent 1000 mg Plus Electrolytes Natural Orange FlavorAmerican Health1,026 mg
• Ester-C Immune Charge Gummies Orange FlavorNatureSmart30 mg
• Ester-C Immune Charge Quick Dissolve Orange FlavorNatureSmart60 mg
• Ester-C Immune Plus Probiotics 1000 mgNatureSmart1,000 mg
• Ester-C KId Stiks Tropical PunchAmerican Health · off the market250 mg

Where next?

• Liquid vitamin C
• Vitamin C capsules
• Vitamin C drops
• Vitamin C gummies
• Vitamin C powder
• Check an amount of vitamin C
• Labels above the upper limit
• All ingredients