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

• High Potency Vitamin C 1000 mgNatures Plus · off the market1,000 mg
• High Potency Vitamin C 1000 mgNaturesPlus1,000 mg
• High Potency Vitamin C 500 mgSundown Naturals500 mg
• High Potency Vitamin C Gummies Citrus FlavoredRainbow Light · off the market250 mg
• High Potency Vitamin C Powder365 Everyday Value1,250 mg
• High Strength Children's Chewable MultivitaminsSimply Supplements40 mg
• High Strength Glucosamine Sulphate 500 mg With Vitamin CSimply Supplements20 mg
• High Strength HSN PlusSimply Supplements80 mg
• High Strength Multivitamin & MineralHigher Nature100 mg
• High Volume Black CherryPEScience250 mg
• High Volume Blue FrostPEScience250 mg
• High Volume Cotton CandyPEScience250 mg
• High Volume Guava Pineapple PunchPEScience250 mg
• High Volume Melon Berry TwistPEScience250 mg
• High Volume Paradise CoolerPEScience250 mg
• High Volume Raspberry LemonadePEScience250 mg
• High Volume Sour Green ApplePEScience250 mg
• High Volume Sour Peach CandyPEScience250 mg
• High Volume Strawberry KiwiPEScience250 mg
• Higher MindSource Naturals200 mg
• Higher Mind With PhosphatidylserineSource Naturals200 mg
• Highly Absorbable Stress-BHealthy Choice Naturals500 mg
• Hiit Aminos Kiwi & Strawberry1 Up Nutrition60 mg
• Hiit Aminos Passion Fruit1 Up Nutrition60 mg
• HimKaruna1,000 mg
• HisWellthy Nutraceuticals90 mg
• Hist ResetPure Encapsulations250 mg
• Hist-ResistVinco300 mg
• HistaCalmAdaptogen Research500 mg
• HistaEzeDesigns for Health500 mg
• Histamine BlockSeeking Health10 mg
• Histamine Block PlusSeeking Health100 mg
• Histamine DigestSeeking Health10 mg
• Histamine Digest 15,000 HDUOmneDiem10 mg
• Histamine Digest 30,000 HDUOmneDiem10 mg
• Histamine Digest with DAOgest 20,000 HDUOmneDiem10 mg
• Histamine SupportVillage Vitality · off the market20 mg
• HistaResistVitaMonk250 mg
• HistDAOXYMOGEN EP20 mg
• HitANS Performance20 mg
• HLC Child + Multi Natural Black Currant FlavorPharmax100 mg
• HLC Child + Multi Natural Blackcurrant FlavorPharmax · off the market100 mg
• HLC Fit For School Natural Black Currant FlavorPharmax50 mg
• HLC Immunity + Pro Natural Orange FlavorPharmax1,000 mg
• HLC ImmunobioticsPharmax125 mg
• HLC Toddler + Pro Mixed Berry FlavorPharmax40 mg
• HLC Uritol MaintenancePharmax60 mg
• HM ProtectNuMedica100 mg
• HMF CystgenGenestra Brands150 mg
• HMF Fit For School Delicious Natural Black Currant FlavorGenestra Brands50 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