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 138 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- PolyviteD'Adamo Personalized Nutrition10 mg
- Pomegranate Liquid Multi Vitamin & MineralSee Yourself Well5 mg
- Positive OutlookHigher Nature25 mg
- Post Peach MangoNutraBio1 mg
- Post Raw UnflavoredNutraBio · off the market1 mg
- Post-OpSurgery Vitamin · off the market12.5 mg
- Post-Op & Injury Recovery Support FormulaHealFast7.5 mg
- Post-Workout Recovery ChocolateAdvoCare1.5 mg
- Post-Workout Recovery VanillaAdvoCare1.5 mg
- Postnatal Multi + DHANature Made1.4 mg
- Postnatal MultivitaminNutricost4 mg
- Postnatal MultivitaminRainbow Light Vibrance · off the market8 mg
- Postnatal MultivitaminRainbow Light · off the market8 mg
- Postnatal MultivitaminNATURELO Premium Supplements1.5 mg
- Postnatal PlusMama's Select3.5 mg
- PostpartumNutrafol2 mg
- Potent-BPhysician's Strength1 mg
- Potent-C Energy Natural Orange FlavorNature's Plus · off the market1 mg
- PotentPakPhysician's Strength0.15 mg
- Power ATP21st Century Organics · off the market72 mg
- Power CocktailFitLine1.8 mg
- Power Cocktail Junior Natural Orange FlavouredFitLine1.2 mg
- Power Energy-MultiDr. Seth's Vitamin Vibrations5 mg
- Power Greens Berry FlavorPatriot0.3 mg
- Power Greens Natural Berry FlavorWindmill Natural Vitamins1.2 mg
- Power Greens Premium Natural BerryNuMedica0.45 mg
- Power Greens Premium Refreshing BerryNuMedica0.45 mg
- Power Meal VanillaNature's Sunshine1.3 mg
- Power Multi-VCalifornia Academy of Health3 mg
- Power Multi-V Vegi CapsulesCalifornia Academy of Health25 mg
- Power Nutrient Colloidal Vitamins And MineralsGPI · off the market1.5 mg
- Power Nutrient Cranberry FlavorNutrients for Health · off the market1.5 mg
- Power Nutrient Natural CranberryNutrients for Health1.2 mg
- Power Nutrient Natural Cranberry Flavored Vitamins and Minerals BlendVitamins Direct1.5 mg
- Power OnPoweronoff1 mg
- Power Pak Acai BerryTrace Minerals Research0.45 mg
- Power Pak Cherry LimeadeTrace Minerals Research0.45 mg
- Power Pak Concord GrapeTrace Minerals Research0.45 mg
- Power Pak CranberryTrace Minerals Research0.45 mg
- Power Pak Lemon LimeTrace Minerals Research0.45 mg
- Power Pak Mixed BerryTrace Minerals Research0.45 mg
- Power Pak Orange BlastTrace Minerals Research0.45 mg
- Power Pak Pina ColadaTrace Minerals Research · off the market0.45 mg
- Power Pak Pineapple CoconutTrace Minerals Research450 mg as transcribed, likely a slip
- Power Pak Pomegranate BlueberryTrace Minerals Research450 mg as transcribed, likely a slip
- Power Pak RaspberryTrace Minerals Research0.45 mg
- Power Pak TangerineTrace Minerals Research450 mg as transcribed, likely a slip
- Power Protein 90 Apricot-Maracuya FlavourBody Attack Sports Nutrition1.1 mg
- Power Protein 90 Banana FlavourBody Attack Sports Nutrition1.1 mg
- Power Protein 90 Blueberry-Yoghurt CreamBody Attack Sports Nutrition1.65 mg