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

• Hardcore Amino 3000MET-Rx30 mg
• Hardcore MultivitaminGNC Beyond Raw300 mg
• Hardwire Lime ColadaMethod500 mg
• Hardwire Paradise PunchMethod500 mg
• Harmonia DeluxeD'Adamo Personalized Nutrition Genomain a blend
• Harmony Formula 650 mgFull Life80 mg
• Hawaiian NoniSwanson Ultra · off the market90 mg
• Hawaiian Noni JuiceEB Earth's Bounty · off the market68 mg as transcribed, likely a slip
• Hawaiian Noni Juice BlendEB Earth's Bounty1 mg
• HBP Rx SupportVinco · off the market200 mg
• HBP Script SupportVinco200 mg
• hCG Diet SupportBiomedx Research60 mg
• hCG EnergyCreative Bioscience · off the market60 mg
• HDL AssistEnzymatic Therapy · off the market148 mg
• HDL AssistNature's Way148 mg
• HDL BoosterEnzymatic Therapy · off the market148 mg
• Hdl RxIntegrative Therapeutics148 mg
• HeadacheFreeHeadache Free60 mg
• Headstrong Bangin' BajaVitasport200 mg
• Health 3 in 1EA Enhanced100 mg
• HealthPakUSANA500 mg
• Healthy Aging MultiVitamer Laboratories120 mg
• Healthy Beets+ Superfood Powder UnflavoredPurely Inspired90 mg
• Healthy Blend Juice BlendDynamic Health Laboratories · off the market60 mg
• Healthy BloodGarden of Life Vitamin Code90 mg
• Healthy Blood FlowTerry Naturally400 mg
• Healthy Body PackCooper Complete · off the market150 mg
• Healthy Defense Citrus PomegranateFRS312 mg
• Healthy Defense Pomegranate BlueberryFRS312 mg
• Healthy EnergyFRS120 mg
• Healthy Energy Citrus PomegranateFRS156 mg
• Healthy Energy Lemon LimeFRS166 mg
• Healthy Energy Low Cal OrangeFRS120 mg
• Healthy Energy OrangeFRS120 mg
• Healthy Energy Peach MangoFRS120 mg
• Healthy Energy Pineapple MangoFRS120 mg
• Healthy Energy Pomegranate BlueberryFRS120 mg
• Healthy Energy Raspberry + AcaiAspire63 mg
• Healthy Energy Wild BerryFRS159 mg
• Healthy Eye SurferRemedys Nutrition60 mg
• Healthy Eyes21st Century200 mg
• Healthy EyesDaVinci Laboratories Of Vermont · off the market250 mg
• Healthy EyesDaVinci Laboratories250 mg
• Healthy Eyes Extra21st Century300 mg
• Healthy Eyes Lutein & Zeaxanthin21st Century60 mg
• Healthy Eyes Lutein and Antioxidants21st Century200 mg
• Healthy Eyes Super Vision21st Century452 mg
• Healthy Eyes SuperVision21st Century225 mg
• Healthy Eyes SuperVision 221st Century · off the market250 mg
• Healthy Eyes SuperVision221st Century250 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