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 28 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Bedoyecta CapsulesBedoyecta36 mg
- Bedoyecta KidsValeant Pharmaceuticals North America · off the market1.5 mg
- Bee ZeeRugby15 mg
- Beet & B Energizer Powder Watermelon FlavorCountry Life0.27 mg
- Begin Daily GI PrimerNutrilite0.4 mg
- Belly Fat FormulaRelacore Extra15 mg
- BenfoMaxPure Encapsulations200 mg as transcribed, likely a slip
- Benfotiamine 100 mg with ThiamineLife Extension25 mg
- Benfotiamine 150 mgBenfotiamine.Net · off the market103 mg
- Benfotiamine 150 mgBIOVEA103 mg
- Benfotiamine 150 mgKlaire Labs · off the market150 mg
- Benfotiamine 150 mgSource Naturals103 mg
- Benfotiamine 150 mg Multi-BBenfotiamine.Net · off the market83.25 mg
- Benfotiamine 150 mg with ThiaminCountry Life50 mg
- Benfotiamine 320 mgSuperSmart · off the market220 mg
- Benfotiamine 80 mgSuperSmart · off the market220 mg
- Benfotiamine 80 mgAOR Advanced Orthomolecular Research Premium80 mg
- Benfotiamine with Coenzyme B1 150 mgCountry Life · off the market50 mg
- Benfotiamine with Thiamin 150 mgCountry Life · off the market50 mg
- Benfotiamine with ThiamineLake Avenue Nutrition10 mg
- Benfotiamine with Thiamine 100 mgLife Extension · off the market25 mg
- Benfotiamine-V 150 mgBenfotiamine.Net103 mg
- Bengal Bites Chewable Natural Berry FlavorVitamer Laboratories · off the market1.5 mg
- Benny Bears Fruit FlavoredWonder Laboratories1 mg
- Berkeley Life Heart HealthBerkeley Life90 mg
- Berocca Boost Tropical PunchBayer1.2 mg
- Berocca Orange FlavorBayer15 mg
- Berry Garden GummiesNature's Dynamics · off the market2.5 mg
- BerryLicious Super Multi Sweet BerryIrwin Kids1.5 mg
- Best Fully Active B ComplexDoctor's Best · off the market60 mg
- Best MultipleDoctor's Best · off the market60 mg
- Betaine HCL and PepsinEndo-met Laboratories5 mg
- Better BProgressive Professional from Progressive Laboratories25 mg
- Better Mood +InfoWars M.D6 mg
- BetterNatalPharmics · off the market1.5 mg
- Beveri Immunity Boost Natural Tangerine Flavorbeveri0.4 mg
- Beveri Immunity Boost Natural Tropical Fruit Flavorbeveri0.4 mg
- BeWell Daily Multivitamin & MineralArbonne2.5 mg
- Beyond BasicsMRM20 mg
- Beyond FoodCountry Life · off the market25 mg
- Beyond Food Iron FreeCountry Life25 mg
- Beyond Tangy TangerineYoungevity30 mg
- Beyond Tangy Tangerine 2.0Youngevity30 mg
- Beyond Tangy Tangerine 2.0 Citrus Peach FusionYoungevity30 mg
- BID MultiSelectMoss Nutrition25 mg
- BID MultiSelect (without Copper, Iron, Vitamin K)Moss Nutrition25 mg
- Big 100GNC · off the market100 mg
- Big 150GNC · off the market150 mg
- Big 50GNC · off the market50 mg
- Big Max Rich ChocolateMM Sports Nutritionin a blend