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

• C1000Genestra Brands1,000 mg
• C4 50X Fruit PunchCellucor375 mg
• C4 50x Icy Blue RazzCellucor375 mg
• C4 50X Pre-Workout Icy Blue RazzCellucor375 mg
• C4 50x WatermelonCellucor375 mg
• C4 Berry BombCellucor250 mg
• C4 Energy-Pack Icy Blue RazzCellucor250 mg
• C4 Extreme Energy Cherry LimeadeCellucor250 mg
• C4 Extreme Energy Icy Blue RazzCellucor250 mg
• C4 Extreme Energy Lemon DropCellucor250 mg
• C4 Extreme Energy Strawberry KiwiCellucor · off the market250 mg
• C4 Extreme Green AppleCellucor250 mg
• C4 Extreme Mystery FlavorCellucor250 mg
• C4 Extreme PineappleCellucor250 mg
• C4 Extreme Strawberry MargaritaCellucor250 mg
• C4 Extreme WatermelonCellucor250 mg
• C4 Fruit PunchCellucor250 mg
• C4 Green AppleCellucor250 mg
• C4 Icy Blue RazzCellucor250 mg
• C4 Mass Fruit PunchCellucor250 mg
• C4 Mass Icy Blue RazzCellucor250 mg
• C4 Mass Pink LemonadeCellucor250 mg
• C4 Mass With Creacarb Fruit PunchCellucor250 mg
• C4 Mass With Creacarb Icy Blue RazzCellucor250 mg
• C4 Neuro Icy Blue RazzCellucor250 mg
• C4 Neuro WatermelonCellucor250 mg
• C4 Orange DreamsicleCellucor250 mg
• C4 Original Cherry LimeadeCellucor250 mg
• C4 Original Frozen BombsicleCellucor250 mg
• C4 Original Frozen BomsicleCellucor250 mg
• C4 Original Fruit PunchCellucor250 mg
• C4 Original Green AppleCellucor250 mg
• C4 Original Juicy Candy BurstCellucor250 mg
• C4 Original Orange BurstCellucor250 mg
• C4 Original Pink LemonadeCellucor250 mg
• C4 Original Strawberry MargaritaCellucor250 mg
• C4 Original Tart Candy ExplosiveCellucor250 mg
• C4 Original Wild Fruit BlastCellucor250 mg
• C4 Pink LemonadeCellucor250 mg
• C4 Ripped Berry BrainiacsCellucor250 mg
• C4 Ripped Cherry LimeadeCellucor250 mg
• C4 Ripped Fruit PunchCellucor250 mg
• C4 Ripped Fruity Rainbow BlastCellucor250 mg
• C4 Ripped Icy Blue RazzCellucor250 mg
• C4 Ripped Raspberry LemonadeCellucor250 mg
• C4 Ripped Tropical PunchCellucor250 mg
• C4 Ripped Ultra FrostCellucor250 mg
• C4 Strawberry KiwiCellucor250 mg
• C4 Strawberry MargaritaCellucor250 mg
• C4 Ultimate Apple BerryCellucor250 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