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 86 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Kids' Multivitamin Completeup&up1.5 mg
- KidsActive Fruit Punch FlavorZahler · off the market6 mg
- KidsActive Fruit Punch FlavorAdvanced Nutrition by Zahler6 mg
- Kidstiks Groovy GrapeAmerican Health0.38 mg
- Kidstiks Tropical PunchAmerican Health0.38 mg
- Kidz SuperFood Outrageous Chocolate FlavorAmazing Grassin a blend
- Kidz SuperFood Wild Berry FlavorAmazing Grass · off the marketin a blend
- Kinder LoveFloradix0.68 mg
- Kinder LoveFlora0.76 mg
- Kindermins Natural Fruit FlavorHerbalife · off the market0.5 mg
- Kindermune (Natural Cherry Flavor)Priority One Nutritional Supplements32 mg
- King Mass XL Dark ChocolateRonnie Coleman Signature Seriesin a blend
- King Mass XL Strawberry MilkshakeRonnie Coleman Signature Seriesin a blend
- King Mass XL Vanilla Ice CreamRonnie Coleman Signature Seriesin a blend
- Kino Octane Blue RaspberryKinobody100 mg
- Kino Octane GrapeKinobody100 mg
- Kino Octane Kino ColadaKinobody100 mg
- Kino Octane Strawberry MargaritaKinobody100 mg
- Kino Octane WatermelonKinobody100 mg
- Klean B-ComplexKlean Athlete25 mg
- Klean Gummy Multivitamin Natural Raspberry-Lemonade FlavorKlean Athlete1.5 mg
- Klean MultivitaminKlean Athlete25 mg
- Koala Freak 2.0 Aussie AppleStaunch · off the market75 mg
- Koala Freak 2.0 Pre-Workout Aussie AppleStaunch · off the market75 mg
- Koala Freak 2.0 Pre-Workout Blue 'Baz' BerryStaunch · off the market75 mg
- Koala Freak 2.0 Pre-Workout Peach MangoStaunch · off the market75 mg
- Koala Freak 2.0 Pre-Workout Strawberry Pina KoalaStaunch · off the market75 mg
- Koala Freak 2.0 Pre-Workout Tropical MojitoStaunch · off the market75 mg
- Koala Freak 2.0 Tropical MojitoStaunch · off the market75 mg
- Koala Freak 2.0 Unicorn BloodStaunch · off the market75 mg
- Koala Freak Pina KoalaStaunch · off the market75 mg
- Koala Pals Multivitamin Supplement Cherry BurstMelaleuca0.7 mg
- Komilon Orange Flavored SyrupCombisa Laboratorios1.36 mg
- KundaliniANTIAGING Institute of California6 mg
- Kyolic GABA, Vitamin B1, B6 & B12 Formula 101Kyolic18 mg
- Kyolic Stress & Fatigue Relief Formula 101Kyolic18 mg
- L Carnitine 550SNI Essential Series · off the market25 mg
- L-Arginine Cardio CompleteHerbal Nutrition3 mg
- L-Carnitine XtremeDymatize Nutrition · off the market2.5 mg
- L-Carnitine XtremeDymatize · off the market2.5 mg
- L-ToxMM Sports Nutrition7.5 mg
- Lactation SupportHMS Nutrition1.7 mg
- Ladies' ChoiceBluebonnet50 mg
- Ladies' OneBluebonnet1.2 mg
- Ladies' One 40+Bluebonnet1.8 mg
- Ladies' One PrenatalBluebonnet1.4 mg
- Lavish LashHairgenics5 mg
- LDA FormulaDouglas Laboratories100 mg
- LDA Multi-VitaminKlaire Labs · off the market50 mg
- LeanIML Hersin a blend