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 67 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Full Blown XXX Blue RaspberryMM Sports Nutrition1.5 mg
- Full Blown XXX Pink LemonadeMM Sports Nutrition1.5 mg
- Full Blown XXX Power PunchMM Sports Nutrition1.5 mg
- Full Of Energy Senior MultiVitaCeutical Labs · off the market3 mg
- Full Spectrum B with Vitamin CNature's Blend · off the market1.5 mg
- Full Spectrum Daily MultipleHealthy Choice Naturals50 mg
- Full Spectrum with Vitamin CNature's Blend1.5 mg
- Fully Active B ComplexDoctor's Best60 mg
- Fully Active B Complex with QuatrefolicDoctor's Best60 mg
- FulviMaxEpigenetic Labs2 mg
- Fun PlayKidzPlay1 mg
- Fusion PlusUS Pharmaceutical Corporation2 mg
- G Fuel OrangeGamma Labs1.5 mg
- G-150 Benfotiamine 150 mgBenfoComplete.com85 mg
- G-ImmunityCellusyn Laboratories · off the market1.5 mg
- GABA L-Theanine Stress B Lozenge Mango TangerineKAL4 mg
- GABA L-Theanine Stress B Lozenge Natural Mango Tangerine FlavorKAL · off the market4 mg
- Gain Fast 3100 Banana-Split ShakeUniversal1.5 mg
- Gain Fast 3100 Chocolate ShakeUniversal1.5 mg
- Gain Fast 3100 Cookies & CreamUniversal · off the market1.5 mg
- Gain Fast 3100 Pina-Colada ShakeUniversal1.5 mg
- Gain Fast 3100 Strawberry ShakeUniversal Nutrition · off the market1.5 mg
- Gain Fast 3100 Strawberry ShakeUniversal1.5 mg
- Gain Fast 3100 Vanilla ShakeUniversal1.5 mg
- Gain+GirlSupps7.5 mg
- Gainer ChocolateMuscle Milk0.53 mg
- Gainer Vanilla CremeMuscle Milk0.53 mg
- Ganoderma Lucidum Spore Complex CapsulesEsmond Natural60 mg
- Garcinia Cambogia with ProbioticsAngry Supplements1.5 mg
- Gaspari's MyoFusion Banana PerfectionGaspari Nutrition1.46 mg
- Gaspari's MyoFusion Chocolate Peanut ButterGaspari Nutrition1.46 mg
- Gaspari's MyoFusion Delicious VanillaGaspari Nutrition0.525 mg
- Gaspari's MyoFusion Milk ChocolateGaspari Nutrition1.46 mg
- Gaspari's MyoFusion Strawberrires And CreamGaspari Nutrition1.46 mg
- Gaspari's Real Mass Chocolate Ice CreamGaspari Nutrition1.5 mg
- Gaspari's Real Mass Rich Vanilla MilkshakeGaspari Nutrition1.7 mg
- Gaspari's Real Mass Strawberry MilkshakeGaspari Nutrition1 mg
- GastriCellLifestream Group0.4 mg
- Gastro-IBSBronson Laboratories4 mg
- GastrobiPlex Dutch ChocolateTruDerma · off the market1.5 mg
- GastrobiPlex Orange CremetruDERMA · off the marketin a blend
- GastrobiPlex Shake Orange CremetruDERMA · off the marketin a blend
- GB - PlusNutri-West2 mg
- GCEL Intracellular GlutathioneSystemic Formulas Bio Challenge10 mg
- Geek Sauce Cosmic ColadaFitStrong Supplements1.3 mg
- Gelcavit Q-10Pharmacaps3.2 mg
- General Health Daily FundamentalsSP Standard Process0.2 mg
- Generation 50+FitLine1.8 mg
- Generation MCoast Science2.25 mg
- Genessenntials Spectra SNPDaVinci Laboratories Of Vermont · off the market25 mg