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

• BrainStormAllergy Research Group5 mg
• BrainStrong KidsAmeriFit60 mg
• BrainStrong ToddlerAmeriFit90 mg
• BrainSustain Creamy ChocolateXYMOGEN EP · off the market400 mg
• BrainSustain Creamy ChocolateXYMOGEN400 mg
• BrainSustain Vanilla DelightXYMOGEN EP · off the market400 mg
• BrainSustain Vanilla DelightXYMOGEN400 mg
• Brazil Red Bee Propolis Blood Sugar FormulaConfidence USA300 mg
• Breakfast Squares Iced Cinnamon BunGNC Total Leanin a blend
• Breakfast Squares Oatmeal Chocolate ChipGNC Total Leanin a blend
• Breakfast Squares Strawberries & CreamGNC Total Leanin a blend
• Breast AssureVitamin World150 mg
• Breast Assure ComplexFemgest150 mg
• Breast EnhancementBust Bunny475 mg
• Breast HealthProCaps Laboratories · off the market100 mg
• Breast HealthProCaps100 mg
• Breast MateMushroom Wisdom160 mg
• BreastBlendVitanica500 mg
• Breathe EasyTotally Products125 mg
• Breathe FreeRootology60 mg
• Breathe-EZOL Olympian Labs200 mg
• Breathe-EZ Sinus SupportLifeSeasons · off the market500 mg
• Breathe-XLifeSeasons Therapeutics500 mg
• Breathe-X Allergy & Sinus SupportLifeSeasons · off the market500 mg
• BreatheMD1MD · off the market120 mg
• BreatheMD1MD Nutrition120 mg
• BreatheWellLive Conscious40 mg
• Bright Singles OrangeStevita36 mg
• BrightDayBrightDay · off the market300 mg
• Brighten UpMichael's Naturopathic Programs100 mg
• Brighter Day Natural Blackcurrant FlavourHigher Nature100 mg
• Brilliant AntioxidantsAgeImmune · off the market300 mg
• Brilliant BerberineAgeImmune · off the market1,000 mg
• Brilliant Vision with Seanol-PProgressive Professional from Progressive Laboratories42 mg
• Brilliant Vitamin C+ 1000 mgAgeImmune1,000 mg
• Brite EyesLifeTIME500 mg
• Broad Spectrum AntioxidantsBronson Laboratories500 mg
• Broad Spectrum CBD Water 10 mg Blue RaspberrySpectrum · off the market90 mg
• Broad Spectrum CBD Water 10 mg Lemon LimeSpectrum · off the market90 mg
• Broad Spectrum CBD Water 10 mg Tropical PunchSpectrum · off the market90 mg
• Broccoli PowderBIOVEA Natural Foods13 mg
• Broccoli Seed ExtractThorne100 mg
• Bromelain ComplexIntegrative Therapeutics225 mg
• Bromelain ComplexEnzymatic Therapy · off the market225 mg
• Bromelain PlusEnzymatic Therapy · off the market225 mg
• Bromelain-Papain ComplexMBi Nutraceuticals60 mg
• BromInjKaruna1,000 mg
• BromlnjKaruna1,000 mg
• Bronquisan Honey with PropolisFull Life27 mg
• Brown Rice ProteinHerb Stopin a blend

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