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 98 of 399), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Cranberry ConcentratePurePremium Supplements20 mg
• Cranberry ConcentrateSR Sports Research · off the market100 mg
• Cranberry ConcentratePure Healthland20 mg
• Cranberry ConcentrateWonder Laboratories40 mg
• Cranberry Concentrate + Vitamin CHorbaach200 mg
• Cranberry Concentrate 12,600 mgBest Naturals40 mg
• Cranberry Concentrate 140 mgIndiana Botanic Gardens100 mg
• Cranberry Concentrate 140 mgBotanic Choice100 mg
• Cranberry Concentrate 252 mgNutracraft20 mg
• Cranberry Concentrate 400 mg with Vitamin CMeijer Naturals50 mg
• Cranberry Concentrate 400 mg With Vitamin CMartin Avenue Pharmacy50 mg
• Cranberry Concentrate Extra StrengthBRI Nutrition20 mg
• Cranberry Concentrated 400 mgVitabase50 mg
• Cranberry Extract 12:1 Plus Vitamin CViva Vitamins50 mg
• Cranberry Fruit 4200 mg plus Vitamins C & EGood 'N Natural · off the market40 mg
• Cranberry Fruit Complex 25,000 mgSports Research100 mg
• Cranberry Fruit ConcentratePuritan's Pride Premium40 mg
• Cranberry Fruit ConcentrateVitamin World40 mg
• Cranberry Fruit Concentrate 12,600 mgPuritan's Pride Premium · off the market20 mg
• Cranberry Fruit Concentrate 4200 mgPuritan's Pride40 mg
• Cranberry Fruit ExtractBluebonnet Super Fruit · off the market60 mg
• Cranberry Fruit Extract with Vitamin CBluebonnet60 mg
• Cranberry Fruit Plus Vitamins C & EGood 'N Natural · off the market40 mg
• Cranberry IntensiveBioCare600 mg
• Cranberry Juice Concentrate plus Vitamin CSolumeve · off the market20 mg
• Cranberry Juice Concentrate Powder plus Vitamin CSolumeve20 mg
• Cranberry Maximum StrengthZHOU20 mg
• Cranberry Plex with Ester-CPhysioLogics · off the market200 mg
• Cranberry PlusGenestra Brands10 mg
• Cranberry PlusFuturebiotics200 mg
• Cranberry Plus 400 mgThe Vitamin Shoppe30 mg
• Cranberry plus Ester-CSolgar200 mg
• Cranberry Plus Probiotic21st Century60 mg
• Cranberry plus Vitamin CGNC Herbal Plus60 mg
• Cranberry Plus Vitamin CFinest Natural40 mg
• Cranberry Plus Vitamin CHealthy Accents40 mg
• Cranberry Plus Vitamin CNature's Bounty · off the market100 mg
• Cranberry Plus Vitamin C 4200 mgFinest Nutrition40 mg
• Cranberry Plus With Vitamin C Natural Strawberry FlavorThe Vitamin Shoppe120 mg
• Cranberry Premium Blend 400 mgNature's Way30 mg
• Cranberry Premiun BlendNature's Way30 mg
• Cranberry SoftgelsAZO120 mg
• Cranberry Softgels with Vitamin CBulkSupplements.com40 mg
• Cranberry StandardizedNature's Way · off the market30 mg
• Cranberry Whole Fruit ConcentrateSwanson · off the market100 mg
• Cranberry Whole Fruit Concentrate Super StrengthSwanson · off the market100 mg
• Cranberry with D-MannoseThe Vitamin Shoppe60 mg
• Cranberry with D-MannoseProCaps Laboratories50 mg
• Cranberry With ProbioticMason Natural30 mg
• Cranberry with Vitamin CCVS Health120 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