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 71 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- GREENS Berry Bliss SampleCore Nutritionals1.2 mg
- GREENS Chocolate DecadenceCore Nutritionals1.2 mg
- GREENS Chocolate Decadence SampleCore Nutritionals1.2 mg
- Greens CompleteAkasha Naturals10 mg
- Greens Effervescent Tablets Melon Lime FlavorTrace Minerals1.2 mg
- GREENS Grape CandyCore Nutritionals1.2 mg
- GREENS Vanilla BeanCore Nutritionals1.2 mg
- Growth & ShineBioSchwartz5 mg
- Growth Vitamins Vanilla FlavoredThe Beard Club10 mg
- Grunt CandyCombat Nutra7.1 mg
- Gt ThymusSystemic Formulas Bio Function2.34 mg
- Gtc #2Bronson · off the market25 mg
- GTC FormulaBronson50 mg
- GTC Formula #2Bronson Laboratories · off the market25 mg
- GummiesNatures Plus Source of Life Animal Parade1.5 mg
- GummiesNaturesPlus Animal Parade1.5 mg
- Gummies Kids Multi with Iron Orange FlavorGarden of Life Vitamin Code1.2 mg
- Gummies Men's Multi Lemon Berry FlavorGarden of Life Vitamin Code1.2 mg
- Gummies Prenatal Multi with Iron 27 mg & Folate 600 mcg Cherry Lemonade FlavorGarden of Life Vitamin Code1.4 mg
- Gummy Bear EssentialsRainbow Light · off the market0.75 mg
- Gummy Mega Multi-Vitamin for Children Raspberry Naturally FlavoredVitables0.3 mg
- Gummy Power SoursRainbow Light · off the market0.75 mg
- Gut Ease+Zemvelo10 mg
- GynecrineProgressive Professional from Progressive Laboratories25 mg
- Gynovite PlusOptimox Corporation · off the market10 mg
- Gynovite PlusOptimox10 mg
- H HeartSystemic Formulas Bio Function7.5 mg
- H Hydro Recovery Coconut FlavorBiochem0.27 mg
- H-Proof Black CherryH-Proof0.45 mg
- H-S-N ComplexDesigns for Health50 mg
- Hair & Nail FormulaRejuviCare · off the market10 mg
- Hair + Beard GrowthRainbow Nutrients5 mg
- Hair + Skin + NailsINNOSUPPS5 mg
- Hair Bloomnutra4health · off the market6 mg
- Hair EssentialsWholly You5 mg
- Hair ForceKAL5 mg
- Hair FullKey Nutrients5 mg
- Hair Growth & VolumeSuccess Chemistry6 mg
- Hair Growth Formula24 Bio · off the market10 mg
- Hair Growth TonicHerbTonics5 mg
- Hair Growth VitaminsZenwise Health0.2 mg
- Hair HealthLES Labs5 mg
- Hair heroEe Essential elements10 mg
- Hair IntegroLevanta Health · off the market100 mg
- Hair Loss SupportVitabase6 mg
- Hair MultivitaminCalifornia Gold Nutrition6 mg
- Hair OpulenceNew Health Corp.5 mg
- Hair Regeneres AdvancedSeroVital1.2 mg
- Hair Repair Advanced Formula For WomenWhole Body Research · off the market10 mg
- Hair Revitalizing FormulaSwanson5 mg