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

• Healthy Eyes with Lutein21st Century · off the market200 mg
• Healthy Fat BurnerTerra Origin100 mg
• Healthy GlucosePriority One Nutritional Supplements500 mg
• Healthy Gut CapsulesTerra Origin500 mg
• Healthy Hair FormulaVitamin World250 mg
• Healthy Hair FormulaPuritan's Pride Premium250 mg
• Healthy Hair Skin & Nails Plus Pomegranate 40:40ProCaps Laboratories90 mg
• Healthy Hair, Skin & NailsTerra Origin100 mg
• Healthy Hair, Skin & NailsProCaps Laboratories90 mg
• Healthy Hair, Skin & NailsProCaps90 mg
• Healthy HeartNutraPro (Neutraceutical Corp.)30 mg
• Healthy Immune Seasonal Immune SupportNOW1,000 mg
• Healthy Immunity Daytime Elderberry FlavorSmartyPants90 mg
• Healthy Immunity Nighttime Elderberry FlavorSmartyPants120 mg
• Healthy JointBioMed Balance · off the marketin a blend
• Healthy JointsSupplement Spot1 mg
• Healthy JointsHealth Logics · off the market90 mg
• Healthy JointsRise-N-Shine · off the market0.5 mg
• Healthy Joints CompleteDr. Suggested · off the market100 mg
• Healthy Kids Immunity Elderberry FlavorSmartyPants90 mg
• Healthy Kids MultivitaminMason Natural90 mg
• Healthy Ligaments & TendonsTerry Naturally300 mg
• Healthy Ligaments & TendonsEuroMedica300 mg
• Healthy LivingENZO Nutraceuticals60 mg
• Healthy LungsSupplement Spot125 mg
• Healthy Mom Prenatal MultiNature's Bounty Optimal Solutions100 mg
• Healthy Protein Blackberry AcaiFRS156 mg
• Healthy Protein Orange CreamFRS156 mg
• Healthy SkinSupplement Spot120 mg
• Healthy Skin & Hair plus NailsIrwin Naturals · off the market200 mg
• Healthy Skin Within Skin ElixirArbonne · off the market100 mg
• Healthy Sleep UltraBodyHealth10 mg
• Healthy Slim TropicalFRS156 mg
• Healthy Transformation Advanced NutritionMetagenics60 mg
• Healthy Tummy Natural French Vanilla Ice Cream FlavorNatren10 mg
• Healthy VeinsDaVinci Laboratories Of Vermont · off the market75 mg
• Healthy VeinsDaVinci Laboratories75 mg
• Healthy Vision1-800-WellMed · off the market30 mg
• Hear Loss FormulaSuperSmart300 mg
• HeartGNC Mega Men300 mg
• HeartGNC Women's Ultra Mega200 mg
• Heart AntioxidantBluebonnet500 mg
• Heart EssentialsSwanson Condition Specific Formulas · off the market100 mg
• Heart FitCarlson150 mg
• Heart HealthPomology · off the market50 mg
• Heart HealthPureMax Labs YummyVite30 mg
• Heart Health Black CherryEmergen-C1,000 mg
• Heart Health Support PackNature's Bounty60 mg
• Heart Healthy MultivitaminDr. Sinatra400 mg
• Heart Healthy Multivitamin CompleteDr. Sinatra150 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