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 148 of 399), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Grass-Fed Whey Protein StrawberryAN Amazing Nutrition Amazing Formulasin a blend
- Grass-Fed Whey Protein VanillaEat The Bear ETB · off the marketin a blend
- Grass-Fed, Certified rBGH-Free Whey Protein Powder ChocolateSwanson Ultra · off the market6 mg
- Grass-Fed, Certified rBGH-Free Whey Protein Powder StrawberrySwanson Ultra · off the market6 mg
- Grass-Fed, Certified rBGH-Free Whey Protein Powder VanillaSwanson Ultra · off the market6 mg
- Graviola - Ganabana - SoursopDynamic Health Laboratories Inc.60 mg
- Graviola JuiceBIOVEA60 mg
- Great HairVitabase250 mg
- Great Results KetoJustified Laboratories150 mg
- Green and RedNatures Plus Source of Life · off the market1,000 mg
- Green and RedNaturesPlus Source of Life1,000 mg
- Green and Red Mini-TabsNature's Plus Source of Life · off the market1,000 mg
- Green BlendFlora7 mg
- Green Blends Cleansing CapletsEarthrise2 mg
- Green Blends Cleansing PowderEarthrise2 mg
- Green MagmaGreen Foods · off the market9 mg
- Green Magma Barely Grass JuiceGreen Foods · off the market5 mg
- Green Magma TabletsGreen Foods5 mg
- Green OxygenHealthy People Co20 mg as transcribed, likely a slip
- Green PowerGreens Today210 mg
- Green Power FormulaGreens Today · off the market215 mg
- Green Protein AlchemyHealthForce SuperFoods24 mg
- Green Protein Alchemy Magic MintHealthForce SuperFoods24 mg
- Green SourceRadiance1,000 mg
- Green SourceGood 'N Natural · off the market120 mg
- Green SourceWonder Laboratories120 mg
- Green SourceDC500 mg
- Green SourcePuritan's Pride120 mg
- Green Source Iron FreePuritan's Pride120 mg
- Green Source Multi Vitamins & MineralsVitamin World500 mg
- Green Source Multivitamin & MineralsVitamin World500 mg
- Green Super Food Bursting Ripe BerryLEAN Nutraceuticals28 mg
- Green SuperfoodAmazing Grass · off the market25 mg
- Green Superfood Alkalize & DetoxAmazing Grass · off the market4 mg
- Green Superfood Alkalize & Detox Simply PureAmazing Grass4 mg
- Green SuperFood All Natural Drink PowderAmazing Grass · off the market28 mg
- Green SuperFood Antioxidant Berry Drink PowderAmazing Grass · off the market25 mg
- Green Superfood Antioxidant Sweet BerryAmazing Grass · off the market24 mg
- Green Superfood BerryAmazing Grass15 mg
- Green Superfood Berry FlavorAmazing Grass15 mg
- Green SuperFood Berry Flavor Drink PowderAmazing Grass · off the market28 mg
- Green Superfood Berry InfusionAmazing Grass · off the market32 mg
- Green SuperFood Cacao Chocolate InfusionAmazing Grass · off the market20 mg
- Green Superfood Capsules The OriginalAmazing Grass · off the market13 mg
- Green SuperFood ChocolateAmazing Grass18 mg
- Green SuperFood Chocolate Drink PowderAmazing Grass · off the market18 mg
- Green Superfood Detox & DigestAmazing Grass · off the market11 mg
- Green Superfood Energy Lemon-LimeAmazing Grass21 mg
- Green Superfood Energy WatermelonAmazing Grass22 mg
- Green Superfood Hydrate Strawberry Lemonade FlavorAmazing Grass45 mg