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 54 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Dynamic BrainStonehenge Health3 mg
- Dynamic Brain 300 mgStonehenge Health3 mg
- Dynamic Gainer Chocolate EclairGNC Beyond Raw1.1 mg
- Dynamic Gainer Strawberry ShortcakeGNC Beyond Raw1.1 mg
- Dynamic Gainer Vanilla CheesecakeGNC Beyond Raw1.1 mg
- Dynamic Multi Powder BerryNutri-Dyn3 mg
- Dyno VitesNatures Plus100 mg
- Dyno Vites for Athletes and Active AdultsNature's Plus · off the market100 mg
- DysBio-GIInnate Response Formulas9 mg
- E-200 With B-ComplexDouglas Laboratories5 mg
- E-CellDaily Sprays5 mg
- E2GPS Genesis Pure Sports1.5 mg
- e9 Tropical BurstSynergy1.5 mg
- Ear Care with BioflavonoidsPuritan's Pride1 mg
- Ear EssentialsSwanson Condition Specific Formulas · off the market4 mg
- Ear Health PlusMason Natural0.67 mg
- Earth Genius Men's MultivitaminGNC Earth Genius · off the market5 mg
- Earth Source Multi-NutrientSolgar27.5 mg
- Earth's Green Essentialstnvitamins25 mg
- Easy To Swallow High Potency B ComplexOrigin50 mg
- EBOOST Energy Shot Natural Berry-Melon FlavorEBOOST1.5 mg
- EBOOST Energy Shot Natural Fruit Punch FlavorEBOOST1.5 mg
- EBOOST Energy Shot Natural Superberry FlavorEBOOST1.5 mg
- ecoDetoxecoNugenics20 mg
- EcoDrinkSGN Nutrition · off the market0.75 mg
- EcoDrink Daily Berry FlavorSGN Nutrition · off the market0.75 mg
- EcoDrink Daily Orange FlavorSGN Nutrition · off the market0.75 mg
- EcoDrink Multivitamin OrangeLily of the Desert Nutrition0.6 mg
- EcoGreen MultiNOW · off the market25 mg
- EcoGreen Multi Iron-FreeNOW25 mg
- Effer-C Acai Effervescent Drink MixNOW0.76 mg
- Effer-C Cranberry Pomegranate Effervescent Drink MixNOW0.76 mg
- Effer-C ElderberryNOW · off the market0.76 mg
- Effer-C ElderberryNOW Foods0.76 mg
- Effer-C Elderberry Effervescent Drink MixNOW0.76 mg
- Effer-C Lemon-LimeNOW0.76 mg
- Effer-C Lemon-Lime Effervescent Drink MixNOW0.76 mg
- Effer-C OrangeNOW · off the market0.76 mg
- Effer-C OrangeNOW Foods0.76 mg
- Effer-C Orange Effervescent Drink MixNOW0.76 mg
- Effervescent Vitamin C Orange Flavored365 Everyday Value0.38 mg
- Efficient C + Cranberry BenefitsProCaps Laboratories3 mg
- Efficient C Mixed BerryProCaps Laboratories3 mg
- EinsteinLove Me · off the market3 mg
- EinsteinLove Me Nutrition3 mg
- Elan Vital MultipleSource Naturals83 mg
- Elderberry Immune+Emergen-C0.36 mg
- Electro-Vita-MinTrace Minerals Research · off the market2.7 mg
- Electro-Vita-Min Daily 5Trace Minerals Research3 mg
- Electrolyte Fizz GrapeBodyTech0.45 mg