vitamin
Thiamin supplements
Half of the 9,830 thiamin supplements in the NIH label database that print an amount list 5 mg or less per serving; the middle half list 1.5 mg to 25 mg (DSLD version 9.4.0, January 2026). The 103 products whose only supplement ingredient is thiamin list a median of 100 mg.
- Products listing it
- 10,1239,830 print an amount; 277 list it inside a blend without an amount
- Median per serving
- 5 mgmiddle half 1.5 mg to 25 mg
- FDA Daily Value
- 1.2 mgthe median is 417% of it
How much thiamin do supplements contain?
The median product lists 5 mg per serving. One in ten lists 0.6 mg or less, one in ten 50 mg or more. The amount printed most often is 1.5 mg (1,163 products).
Products by amount of thiamin per serving
9,830 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 thiamin is 1.2 mg (adults and children 4 and older). The median product gives 417% of it per serving; the 90th percentile 4167%.
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 thiamin?
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).
- Super Potency Vitamin B 1 (Thiamin) 500 mgSolgar500 mg
- Vitamin B1 High Potency 500 mgBIOVEA500 mg
- Vitamin B1 500 mgNutraBio500 mg
- Vitamin B1 500 mgDr. Clark Store500 mg
- Vitamin B1 500 mgDr. Clark Research Association Dr. Clark Zentrum500 mg
- Vitamin B-1 500 mgVitalBulk500 mg
- Vitamin B-1 500 mgBest Naturals500 mg
- Vitamin B1 500 mgVitamatic500 mg
Have the amounts changed over the years?
Products whose current label entered DSLD in 2011 list a median of 5 mg; those entered in 2025, 5 mg.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 246 | 5 mg |
| 2012 | 754 | 7.5 mg |
| 2013 | 827 | 5 mg |
| 2014 | 490 | 3 mg |
| 2015 | 457 | 3 mg |
| 2016 | 449 | 5 mg |
| 2017 | 490 | 7.75 mg |
| 2018 | 398 | 2.5 mg |
| 2019 | 536 | 3 mg |
| 2020 | 900 | 5 mg |
| 2021 | 819 | 4 mg |
| 2022 | 934 | 3 mg |
| 2023 | 819 | 4.8 mg |
| 2024 | 918 | 5 mg |
| 2025 | 793 | 5 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing thiamin by DSLD product type
Brands listing it most: Douglas Laboratories (245), Nature's Way (221), Nature's Plus (207), Country Life (85), ProCaps Laboratories (79), Bronson (78), Rainbow Light (76), NOW (70), Metagenics (64), New Chapter (62).
Every product listing thiamin
10,123 products, A to Z by name (page 169 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- SuperFocusAOR Advanced Orthomolecular Research Advanced15 mg
- Superfood Alpha Blend Mixed BerryOptimal Alpha1 mg
- Superfood Amazon ChocolateGreens+ Organics0.023 mg
- Superfood Greens Cacao ChocolateFeel Great Vitamin Co.0.04 mg
- Superfood Greens Lemon Ginger FlavoredLadder1.2 mg
- Superfood Greens Mocha CocoaFeel Great Vitamin Co.0.04 mg
- Superfood Greens Very BerryFeel Great Vitamin Co.0.07 mg
- Superfood MultivitaminAPSU · off the market1.5 mg as transcribed, likely a slip
- SuperFood PlusDr. Schulze's6 mg
- Superfood Raw Energy Natural UnflavoredFREZZOR0.2 mg
- Superfood Wild BerryGreens+ Organics0.12 mg
- Superfoods for Kids Shake! Mocha LocoFeel Great Vitamin Co.0.02 mg
- Superfoods Greens GummiesGruns1.2 mg
- Superfoods Multi-VitaminsCATALO4 mg
- Superfruit Liquid Multi Acai FlavorNOW10 mg
- Supergreen Tonik BerryHuman Tonik2 mg
- Supergreens GummiesGoli Nutrition0.6 mg
- SuperHairMoon Juice10 mg
- SuperHD RazorCellucor1 mg
- Superior Adult Chewable Raspberry Rapture Multi-Vitamins & MineralsNature's Harmony10 mg
- Superior Children's Multi Mixed Fruit FlavorBodSmith · off the market2 mg
- Superior One-Per-Day Multi-Vitamins & Minerals Iron Free FormulaNature's Harmony25 mg
- Superior One-Per-Day Multi-Vitamins & Minerals With IronNature's Harmony25 mg
- Superior Strength Hair, Skin & Nails with 5,000 mcg BiotinNature's Truth · off the market5 mg
- SuperNutesOrtho Molecular Products · off the market10 mg
- SuperNutes Chewable MultivitaminOrtho Molecular Products · off the market10 mg
- Superplex-TMajor15 mg
- SuperVB.E.S.T Process Alka-Line Supplements6.6 mg
- SuperVitaminBodycor Naturals · off the market3.75 mg
- Supradyn ActivoBayer1.1 mg
- Supreme Liquid Multivitamin Tropical Fruit FlavorOptim Nutrition1.5 mg
- Supreme Multivitaminnbi50 mg
- Supreme Stress BVitaCeutical Labs100 mg
- Supreme Stress BVitamer Laboratories100 mg
- Supreme Stress BVillage Vitality · off the market100 mg
- Supreme Stress BWoodstock Vitamins100 mg
- Supreme Vital Hair with MSMLifeTIME30 mg
- Surf SupplementAPSU · off the market1.5 mg
- SurpriseCombine2 · off the market1.4 mg
- Sustained EnergyNOW Sports10 mg
- Sustained Release B Complex 50Windmill Natural Vitamins50 mg
- Sustained Release B-100NOW100 mg
- Sustained Release Dyno VitesNature's Plus · off the market100 mg
- Sustained Release Endur-B ComplexEP · off the market15 mg
- Sustained Release Endur-VM Multi-Vitamin & Mineral (Contains Iron)EP · off the market5 mg
- Sustained Release Endur-VM Multi-Vitamin & Mineral (Without Iron)EP · off the market5 mg
- Sustained Release High Potency B "100"Trader Joe's100 mg
- Sustained Release High Potency B "50"Trader Joe's50 mg
- Sustained Release Magnum-75Windmill · off the market75 mg
- Sustained Release Power-PlexNature's Plus · off the market25 mg