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 5 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Active One Multi with IronSwanson Premium Brand · off the market25 mg
- Active Peach MangoPlexus1.5 mg
- Active SeniorRainbow Light · off the market10 mg
- Active Senior SafeGuard MultivitaminRainbow Light · off the market10 mg
- Active Seniors UnflavoredAll One25 mg
- Active VanillaGNC Women's Ultra Mega50 mg
- Active Vanilla CremeGNC Women's Ultra Mega50 mg
- Active Vanilla FlavorReliv0.38 mg
- Active Vitamin PackKirkland Signature51.5 mg
- Active without IronGNC Women's Ultra Mega50 mg
- Active WomanMet-Rx60 mg
- Active Woman's MultiVitabase50 mg
- Active Women's MultivitaminSuper Nutrition50 mg
- ActiveEssentialsXYMOGEN · off the market10 mg
- ActiveMVdotFIT5 mg
- ActivEssentialsXYMOGEN · off the market10 mg
- ActivEssentials For WomenXYMOGEN · off the market10 mg
- ActivEssentials with CalciumXYMOGEN · off the market10 mg
- ActivEssentials With OncoPlex & D3XYMOGEN EP · off the market10 mg
- ActivEssentials with OncoPLEX & D3XYMOGEN · off the market10 mg
- ActiVitBeachBody1.5 mg
- ActiVit Body Toning FormulaBeachbody Nutritionals40 mg
- ActiVit Metabolism FormulaBeachbody Nutritionals27 mg
- Activite SportMHP Maximum Human Performance75 mg
- Activize Oxyplus Natural Black Currant FlavouredFitLine0.7 mg
- ActivNutrientsXYMOGEN10 mg
- ActivNutrients Chewable Natural Mixed Berry FlavorXYMOGEN5 mg
- ActivNutrients PerformanceXYMOGEN3.5 mg
- ActivNutrients PhytoXYMOGEN3 mg
- ActivNutrients without Copper & IronXYMOGEN10 mg
- ActivNutrients without Copper & Iron Multivitamin PowderXYMOGEN · off the market12.5 mg
- ActivNutrients without Copper & Iron Multivitamin Powder Natural Fruit Punch FlavorXYMOGEN12.5 mg
- ActivNutrients without IronXYMOGEN10 mg
- ActivNutrietnsXYMOGEN10 mg
- ActivNutrtientsXYMOGEN · off the market10 mg
- Actra-SX 500 EnergizerBody Basicsin a blend
- AcuteCombine X0.9 mg
- AcuVisionAmrion Nutraceuticals · off the market35 mg
- ADABolic Candy BlissSteel1.5 mg
- ADAM CapsulesNOW25 mg
- Adam SoftgelsNOW25 mg
- ADAM TabletsNOW12.5 mg
- Adam's Secret 1500 Extra StrengthAdam's Secret · off the market20 mg
- Adam's Secret 2000 Extra StrengthAdam's Secret · off the market20 mg
- Adam's Secret 3000 Extra StrengthAdam's Secret · off the market20 mg
- Adam's Secret Bold PowerAdam's Secret · off the market20 mg
- Adam's Secret Extra PowerAdam's Secret · off the market20 mg
- ADB5-PlusBiotics Research Corporation5 mg
- Added AttentionBuried Treasure · off the market20 mg
- Added AttentionBuried Treasure Liquid Nutrients20 mg