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 30 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Biotin & CollagenSNAP5 mg
- Biotin ForteIntegrative Therapeutics10 mg
- Biotin ForteNature's Way10 mg
- Biotin Forte 3 mg Biotin with ZincNature's Way · off the market10 mg
- Biotin Forte 3 mg with ZincEnzymatic Therapy · off the market10 mg
- Biotin Forte Extra Strength-5 mgEnzymatic Therapy · off the market10 mg
- Biotin Forte With ZincIntegrative Therapeutics10 mg
- BioTrimMBi Nutraceuticals2 mg
- Bite-A-Mins Children's Chewable VitaminsWindmill1.05 mg
- Bite-A-Mins With Iron Children's Chewable VitaminWindmill1.05 mg
- Bladder 2.2Theralogix1.5 mg
- BladdersylApproved Science25 mg
- Blaze Berry BlastMTN OPSin a blend
- Blood BoosterPremium Certified5 mg
- Blood Nourish-RLifeSeasons · off the market25 mg
- Blood Nourish-RLifeSeasons Therapeutics25 mg
- Blood NutrientsCarlson10 mg
- Blood Nutrients 28 mgCarlson10 mg
- Blood Sugar BalanceENP25 mg
- Blood Sugar HealthSNAP1 mg
- Blood Sugar ManagerEnzymatic Therapy · off the market56 mg
- Blood Sugar SupportVillage Green Pathway3 mg
- Blood Sugar SupportHealth Products Distributors1 mg
- Blood Sugar SupportWoodstock Vitamins100 mg
- Blood Sugar Support PackDouglas Laboratories50 mg
- Blood SupportNature's Plus AgeLoss · off the market25 mg
- Blood VitalityDr. Wholeness1.2 mg
- Bloodsyl +BioPerineApproved Science · off the market5 mg
- Blu Frog 2Limu Energy · off the market1.5 mg
- Blue 1,000 mg Vitamin C Berry BlueEmergen-C0.38 mg
- Blue 1000 mg Vitamin C Triple BerryEmergen-C0.38 mg
- Blue ForteraBlue Fortera · off the marketin a blend
- Body Boost Women Organic Multivitamin GummyNature's Dynamics · off the market5.38 mg as transcribed, likely a slip
- Body Fuel Ultimate Energy Drink Natural Lemon-Lime FlavorProCaps Laboratories2.5 mg
- Body RoxUSANA6.67 mg
- Body Rush Cherry LimeadeForce Factor4 mg
- Body Rush Fruit PunchForce Factor4 mg
- Body Rush Strawberry KiwiForce Factor4 mg
- Body, Hair, Skin & NailsMason Natural1.5 mg
- Bone DensityGNC Women's Ultra Mega50 mg
- Bone Density Without Iron And IodineGNC Women's Ultra Mega50 mg
- Bone Health PackDouglas Laboratories50 mg
- Bone StrengthNOW3 mg
- Bone Strength FormulaProtocol For Life Balance · off the market5 mg
- Bone Strength SystemLuckyVitamin3 mg
- Bone Structure Multivitamin & MineralNatural Factors Whole Earth & Sea · off the market0.56 mg
- Bone Support FormulaProtocol For Life Balance3 mg
- Bone Total HealthMartin Avenue Pharmacy50 mg
- Boost Dutch ChocolateGreens First0.6 mg
- Boost Energy Matrix Vanilla Mint FlavorBioSource Labs4.45 mg