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 176 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- TrinateCypress1.8 mg
- Trinaz TabletsFoxland Pharmaceuticals1.4 mg
- TriphroCapsTrigen Laboratories1.5 mg
- Triple Action Stress ShieldCountry Life · off the market5 mg
- Triple ProbioticNature Made1.5 mg
- Triple-Boost Caffeine-Free EnergyIrwin Naturals9 mg
- TriStart DHACarWin Pharmaceutical Associates1.3 mg
- TriumphLegion · off the market30 mg
- Triumph Men's Sport MultivitaminLegion30 mg
- Triumph Sports Multivitamin for MenLegion · off the market30 mg
- Triumph Women'sLegion30 mg
- TronVITEAmella Pharma1.5 mg
- Tropical Liquid Nutrition Orange Mango FlavorNature's Blend1.5 mg
- Tropical Mango MultivitaminPhysician's Preference · off the market7.5 mg
- Tru Paleo ChocolateAdaptogen Research10 mg
- Tru Paleo VanillaAdaptogen Research10 mg
- Tru-Food Vegan Natural Berry FlavorNOW0.75 mg
- True BalanceNOW20 mg
- True Balance Multi-VitaminProtocol For Life Balance20 mg
- True EnergyBragg1.2 mg
- True Food All ManHigher Nature3 mg
- True Food B ComplexHigher Nature5 mg
- True Food Supernutrition PlusHigher Nature0.94 mg
- True Food Vitality for WomenHigher Nature2.5 mg
- True Food Vitamin B ComplexHigher Nature · off the market5 mg
- True Food Wise WomanHigher Nature3 mg
- True Vitality UnflavoredGreen Foods1.5 mg
- True-Mass Chocolate Milk ShakeBSN · off the market1.5 mg
- True-Mass Cookies & CreamBSN · off the market1.5 mg
- TrueBNatureCity6.5 mg
- TrueMultiNatureCity12.5 mg
- TrueSport Workut Fuel Orange Pineapple FlavorArbonne0.38 mg
- Trulean ChocolateMET-Rx 180(0)in a blend
- Trulean VanillaMET-Rx 180(0)in a blend
- TruMulti Men's FormulaPEScience1.2 mg
- TruMulti Women's FormulaPEScience1.2 mg
- TruQ10-100ProCaps Laboratories5 mg
- TruQ10-50ProCaps Laboratories5 mg
- Tuba Prime MultivitaminDEVA15 mg
- TurboForce Tropical Berry FlavorInfowars Life7.5 mg
- Turmeric & Ginger Citrus-GingerEmergen-C0.36 mg
- Turmeric LeanPurely Inspired0.3 mg
- Twice Daily MultiDesigns for Health2.3 mg
- Twice Daily Multi Energy Multi-Vita-MinSolaray · off the market50 mg
- Two-Per-Day CapsulesLife Extension75 mg
- Two-Per-Day MultivitaminLife Extension75 mg
- Two-Per-Day TabletsLife Extension75 mg
- Tyler Multiplex-1 With IronIntegrative Therapeutics50 mg
- Tyler Multiplex-1 Without IronIntegrative Therapeutics50 mg
- Tyler NutriVitamin Enzyme Complex With IronIntegrative Therapeutics25 mg