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 14 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- AllBee with CInternational Vitamin Corporation15 mg
- Aller-BProgressive Professional from Progressive Laboratories50 mg
- Allithiamine (Vitamin B1) 50 mgEcological Formulas · off the market50 mg
- Allithiamine 50 mgEcological Formulas50 mg
- Allithiamine 50 mgCardiovascular Research50 mg
- AlmasedAlmased0.3 mg
- Almased Almond Vanilla FlavorAlmased · off the market0.5 mg
- Almased Synergy DietAlmased · off the market0.7 mg
- Almond Liquid Vite MinGenestra Brands10 mg
- Alpha ATP Cherry LemonadeMMUSA1.2 mg
- Alpha Base Capsules with IronOrtho Molecular Products25 mg
- Alpha Base Capsules Without IronOrtho Molecular Products25 mg
- Alpha Base Premier PacksOrtho Molecular Products25 mg
- Alpha Base Tablets Without IronOrtho Molecular Products · off the market25 mg
- Alpha BeardHollis Nutrition5 mg
- Alpha BeticNature's Way30 mg
- Alpha Betic MultivitaminNature's Way · off the market30 mg
- Alpha DailyOptimal Alpha50 mg
- Alpha Day Brain Focus FormulaPeak Performance Nutraceutics3 mg
- Alpha IQ MindRomeo Health3 mg
- Alpha VitesCoastal Nutrition · off the market1.5 mg
- Alpha-TeenMegaFood · off the market5 mg
- Alpine Custom Complete with IronAlpine Clinic100 mg
- Alsa Dragon FruitAlsa · off the market1.2 mg
- AmThorne FX · off the market50 mg
- AmLife Time Fitness · off the market50 mg
- AM FormulaTriVita · off the market1.5 mg
- AM FormulaLife Time Fitness · off the market20 mg
- AM FormulaNatrol3 mg
- AM MorningKAL10 mg
- AM PackDouglas Laboratories30.5 mg
- Amino Acid CleanseMountain Meadow Herbs25 mg
- Amino Evolution Cherry Iceproject#13 mg
- Amino FuelTwinlab · off the market2.5 mg
- Amino IV Blueberry BurstPhysique Enhancing Science15 mg as transcribed, likely a slip
- Amino IV Cherry LimeadePhysique Enhancing Science15 mg as transcribed, likely a slip
- Amino Restore Natural Choclate FlavorTaylor MD Formulations1.5 mg
- Amino Restore Natural Vanilla FlavorTaylor MD Formulations1.5 mg
- Amino TechUniversal2.5 mg
- Amino-Tone America!Ronnie Coleman Signature Series1.5 mg
- AminoEV Rocket Popproject#13 mg
- AminoLIFT Fruit PunchUSPlabs · off the market15 mg
- AminoLift WatermelonUSPlabs · off the market15 mg
- AminoLift+ Blue RaspberryUSPlabs · off the market3 mg
- AminoLift+ Fruit PunchUSPlabs · off the market3 mg
- AminoLift+ Mango MargaritaUSPlabs · off the market3 mg
- AminoLift+ WatermelonUSPlabs · off the market1 mg
- AminoMeal Select ChocolateMoss Nutrition2 mg
- AminoMeal Select Orange-PineappleMoss Nutrition2 mg
- AminoMeal Select VanillaMoss Nutrition2 mg