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 111 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Multi High PotencySwanson50 mg
- Multi HisMyBite Vitamins0.3 mg
- Multi II Vegetable CapsulesSolgar100 mg
- Multi Men's PrimeSwanson · off the market5 mg
- Multi NutriPowderBioCare10 mg
- Multi OneBluebonnet25 mg
- Multi One Iron-FreeBluebonnet25 mg
- Multi PrenatalNature Made1.5 mg
- Multi ProInnovative Apothecary Solutions2 mg
- Multi RXIronMagLabs50 mg
- Multi SAPNFH100 mg
- Multi Sport Men's DailyNutraBio Performance100 mg
- Multi Sport Men's FormulaNutraBio · off the market100 mg
- Multi Sport Women's DailyNutraBio Performance92 mg
- Multi Sport Women's FormulaNutraBio · off the market92 mg
- Multi t/dPure Encapsulations25 mg
- Multi TwoVillage Green Apothecary50 mg
- Multi Two CapsHealth Products Distributors50 mg
- Multi Two TabsHealth Products Distributors50 mg
- Multi Vit Shots Natural Cherry Cola FlavorHigher Nature12.5 mg
- Multi Vita MinPure Synergy2.4 mg
- Multi Vita SoftgelsBluebonnet50 mg
- Multi VitaminNutra Sport50 mg
- Multi VitaminWebber Naturals · off the market10 mg
- Multi VitaminNature's Way25 mg
- Multi VitaminAxe & Sledge Supplements50 mg
- Multi VitaminWindmill Natural Vitamins10 mg
- Multi VitaminGSL Technology1.5 mg
- Multi Vitamin & Mineral AntioxidantTrader Joe's15 mg
- Multi Vitamin & Mineral Natural Orange/Mango FlavorChildLife Essentials6 mg
- Multi Vitamin 2000MaritzMayer Laboratories · off the market1.5 mg
- Multi Vitamin 2400MaritzMayer Laboratories · off the market1.5 mg
- Multi Vitamin and Fluoride Supplemental Drops 0.25 mgMayne Pharma0.5 mg
- Multi Vitamin and MineralDouglas Laboratories60 mg
- Multi Vitamin and Mineral without IronSwanson25 mg
- Multi Vitamin BeautyAdvanced Nutrition by Zahler0.6 mg
- Multi Vitamin Berry FlavorStrong Earth Kids0.2 mg
- Multi Vitamin BrainfoodAdvanced Nutrition by Zahler1.2 mg
- Multi Vitamin CalmAdvanced Nutrition by Zahler1.2 mg
- Multi Vitamin ComplexETST Earth Science Tech20 mg
- Multi Vitamin DigestionAdvanced Nutrition by Zahler1.2 mg
- Multi Vitamin EnergyAdvanced Nutrition by Zahler1.2 mg
- Multi Vitamin Energy Plus Advanced Women's FormulaFuturebiotics12.5 mg
- Multi Vitamin FormulaGood 'N Natural · off the market3 mg
- Multi Vitamin ImmuneAdvanced Nutrition by Zahler1.2 mg
- Multi Vitamin Made For WomenShredz0.12 mg
- Multi Vitamin MetabolismAdvanced Nutrition by Zahler1.2 mg
- Multi Vitamin One DailyAdvanced Nutrition by Zahler1.2 mg
- Multi Vitamin Passion Fruit & Mango FlavorSpray For Life1.5 mg
- Multi Vitamin With Black Cohosh & Soy IsoflavonesWindmill1.5 mg