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

• Ascorbyl Palmitate (Vitamin C Ester)BulkSupplements.com200 mg
• Ascorbyl Palmitate (Vitamin C Ester) (500 mg)BulkSupplements.com200 mg
• Ascorbyl Palmitate 250 mgDouglas Laboratories250 mg
• Ascorbyl Palmitate 250 mgSwanson Premium Brand · off the market500 mg
• Ascorbyl Palmitate 250 mgSwanson500 mg
• Ascorbyl Palmitate 500 mgNutraBio213 mg
• Ascorbyl Palmitate 500 mgThe Vitamin Shoppe500 mg
• Ascorbyl Palmitate 500 mgBluebonnet500 mg
• Ascorbyl Palmitate 500 mgLife Extension200 mg
• Ascorbyl Palmitate 500 mgSource Naturals703 mg
• Ascorbyl Palmitate 500 mgNOW700 mg
• Ascorbyl Palmitate 500 mg Esterfied Vitamin CNOW · off the market700 mg
• Ascorbyl-C + BioflavonoidsGenestra Brands200 mg
• Ascrobplex 1000Douglas Laboratories · off the market1,000 mg
• Ashwagandha & Rhodiola ComplexHigher Nature50 mg
• Ashwagandha Root PowderMaju Superfoodsin a blend
• AshwaMilkNorth American Herb & Spicein a blend
• Assault Blue Arctic RaspberryMusclePharm500 mg
• Assault Fruit PunchMusclePharm300 mg
• Assault GrapeMusclePharm500 mg
• Assault Lemon LimeMusclePharm500 mg
• Assault Pineapple MangoMusclePharm500 mg
• Assault Pre-Workout Blue RaspberryMP MusclePharm300 mg
• Assault Pre-Workout Fruit PunchMP MusclePharm300 mg
• Assault Raspberry LemonadeMusclePharm500 mg
• Assure Detox Straw-Mango FlavorTotal Eclipse130 mg
• Assure Detox Strawberry MangoTotal Eclipse · off the market130 mg
• Assure Detox Tropical FlavorTotal Eclipse130 mg
• Asta Gummies Mixed Berry Flavor!Purity Products100 mg
• AstaxanthinKala Health60 mg
• Astaxanthin Gummies 8 mg Natural Cherry FlavorCarlson160 mg
• Astra CHealth Concerns250 mg
• Astragalus, Vitamin C & ElderberryVitamin World250 mg
• Athlete FormulaNutrina · off the market500 mg
• Athlete's BCAA Fruit PunchDymatize · off the market90 mg
• Athlete's BCAA WatermelonDymatize · off the market90 mg
• Athlete's Pre Fruit PunchDymatize · off the market250 mg
• Athlete's Pre Orange PineappleDymatize · off the market250 mg
• Athletic Greens Ultimate DailyAthletic Greens420 mg
• Athletic NutrientsPure Encapsulations83 mg
• Athletic Pure PackPure Encapsulations1,125 mg
• Athletic Recovery Strawberry LemonadeFITAID23 mg
• ATP Ignite Natural Citrus FlavorXYMOGEN500 mg
• ATP Ignite Natural Mixed Berry FlavorXYMOGEN500 mg
• ATP Ignite Workout Natural Mixed Berry FlavorXYMOGEN · off the market500 mg
• ATP Natural Citrus FlavorAdaptogen Research500 mg
• Attack 3.0 Orange FlavourBody Attack Sports Nutrition40 mg
• Attack 3.1 Cassis FlavourBody Attack100 mg
• Attack 3.1 Green Apple FlavourBody Attack100 mg
• AttentionLiquid Health225 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