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.
- Products listing it
- 19,91918,583 print an amount; 1,244 list it inside a blend without an amount
- Median per serving
- 100 mgmiddle half 60 mg to 270 mg
- FDA Daily Value
- 90 mgthe median is 111% of it
- Adult upper limit (IOM)
- 2,000 mg224 products go above it a day
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).
Products by amount of vitamin C per serving
18,583 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
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.
Sources: 21 CFR 101.9(c)(8)(iv) (Daily Values); Institute of Medicine, DRI summary tables (2011) (upper limits); on reading them, the FDA's Daily Value page.
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.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 371 | 120 mg |
| 2012 | 1,185 | 200 mg |
| 2013 | 1,373 | 100 mg |
| 2014 | 836 | 100 mg |
| 2015 | 808 | 111.55 mg |
| 2016 | 824 | 120 mg |
| 2017 | 916 | 100 mg |
| 2018 | 772 | 100 mg |
| 2019 | 969 | 100 mg |
| 2020 | 1,680 | 100 mg |
| 2021 | 1,731 | 100 mg |
| 2022 | 1,904 | 100 mg |
| 2023 | 1,716 | 100 mg |
| 2024 | 1,946 | 120 mg |
| 2025 | 1,552 | 100 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing vitamin C by DSLD product type
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 189 of 399), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Kinder Clear (Peach Flavor)Priority One Nutritional Supplements300 mg
- Kinder LoveFloradix30 mg
- Kinder LoveFlora20 mg
- Kinder Well (Natural Cherry Flavor)Priority One Nutritional Supplements500 mg
- Kindermins Natural Fruit FlavorHerbalife · off the market35 mg
- Kindermune (Natural Cherry Flavor)Priority One Nutritional Supplements252 mg
- Kinectic BCAA - SAA Fruit PunchNeon Sport100 mg
- Kinetic BCAA - SAA Lemon BerryNeon Sport100 mg
- Kinetic BCAA - SAA Strawberry LemonadeNeon Sport · off the market100 mg
- Kinetic BCAA-SAA WatermelonNeon Sport100 mg
- King Mass XL Dark ChocolateRonnie Coleman Signature Seriesin a blend
- King Mass XL Strawberry MilkshakeRonnie Coleman Signature Seriesin a blend
- King Mass XL Vanilla Ice CreamRonnie Coleman Signature Seriesin a blend
- King Nitric OxideTop Shelf200 mg
- Kiwi-KlenzXtendlife60 mg
- Klean AntioxidantKlean Athlete125 mg
- Klean Collagen+C Natural Berry FlavorKlean Athlete50 mg
- Klean Collagen+C Natural Tropical Fruit FlavorKlean Athlete50 mg
- Klean Collagen+C UnflavoredKlean Athlete50 mg
- Klean Gummy Multivitamin Natural Raspberry-Lemonade FlavorKlean Athlete80 mg
- Klean Hydration Natural Orange FlavorKlean Athlete12.5 mg
- Klean MultivitaminKlean Athlete120 mg
- Klean Pre-Workout Natural Lemon Tea FlavorKlean Athlete150 mg
- Klean-C Natural Strawberry-Orange FlavorKlean Athlete525 mg
- Koala Pals Multivitamin Supplement Cherry BurstMelaleuca80 mg
- Komilon Orange Flavored SyrupCombisa Laboratorios20 mg
- Korean Red Ginseng Extract PillCheongKwanJangin a blend
- Ks KidneySystemic Formulas Bio Function120 mg
- KundaliniANTIAGING Institute of California120 mg
- Kyo-Red Antioxidant Superfruit BlendWakunaga of America · off the market30 mg
- Kyolic A,C, E & Herbal AntioxidantsKyolic · off the market30 mg
- Kyolic Formula 103Kyolic105 mg
- Kyolic Formula 105Kyolic30 mg
- Kyolic Immune Formula 103Kyolic · off the market105 mg
- Kyolic Vitamin C, Astragalus, MushroomsKyolic105 mg
- Kyolic Vitamin C, Astragalus, Mushrooms, Oregano Formula 103Kyolic105 mg
- KYRO Muscle/Tissue/LigamentSystemic Formulas Bio Challenge75 mg
- L-5-HTP 100 mgVitabase250 mg
- L-5-HTP 100 mgVitamin Discount Center · off the market250 mg
- L-Arginine Caps 700 mgLife Extension10 mg
- L-Arginine Cardio CompleteHerbal Nutrition150 mg
- L-Arginine Complete Mixed Berry FlavorFNX60 mg
- L-Arginine PlusThorne300 mg
- L-Arginine Plus GrapeElements of Health Care60 mg
- L-Ascorbic Acid Vitamin C 1000 mg UnflavoredMuscle Empirein a blend
- L-Carnitine 2000Body Attack110 mg
- L-Carnitine 2000 Liquid Cherry FlavourBody Attack Sports Nutrition80 mg
- L-Carnitine 2000 Liquid Orange FlavourBody Attack Sports Nutrition80 mg
- L-Carnitine 2000 Liquid Orange Flavour 0% SugarBody Attack20 mg
- L-Carnosine 500 mgNatural Factors25 mg