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 56 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Energetic Womens MultiMeijer Naturals50 mg
- EnergevitySource Naturals75 mg
- EnergexNewtonEverett8 mg
- EnergiseHigher Nature25 mg
- EnergizeiSatori4.9 mg
- Energize & Burn Fruit PunchGNC Total Lean Advanced0.15 mg
- Energize & Burn Fruit PunchGNC Total Lean0.15 mg
- Energize & Burn UnflavoredGNC Total Lean Advanced0.15 mg
- Energize Plus Pure PackPure Encapsulations25 mg
- Energize TropicalRyde:0.9 mg
- Energize+ Citrus BurstShaklee Performance0.15 mg
- Energize+ Natural Citrus Burst FlavoredShaklee Performance · off the market0.15 mg
- Energized Xpand Xtreme PumpDymatize Nutrition · off the market3 mg
- Energizer Formula With Coenzyme Q10 & Lipoic AcidMartin Avenue Pharmacy20 mg
- Energizer OneRainbow Light · off the market30 mg
- Energizing Smoothee Mix VanillaShaklee 1800.64 mg
- Energizing Soy Protein Creamy Cocoa FlavorShaklee2 mg
- Energizing Soy Protein Natural VanillaShaklee2 mg
- Energizing Soy Protein Natural Vanilla FlavorShaklee · off the market2 mg
- EnergyUpTime1.5 mg
- EnergyVitabase10 mg
- EnergyAmeriSciences · off the market10 mg
- EnergyBayer One A Day3 mg
- EnergyWeyland Brain Nutrition1.5 mg
- EnergyNOW8 mg
- EnergyCognizance100 mg
- Energy & Fat Metabolism FactorsProCaps Laboratories5 mg
- Energy & Fat Metabolism FactorsProCaps5 mg
- Energy & MetabolismGNC Women's Ultra Mega50 mg
- Energy & MetabolismSNAP1.2 mg
- Energy & MetabolismGNC Mega Men50 mg
- Energy & Metabolism ChocolateGNC Mega Men50 mg
- Energy & Metabolism ChocolateGNC Women's Ultra Mega50 mg
- Energy & Metabolism One DailyGNC Women's Ultra Mega1.7 mg
- Energy & Metabolism VanillaGNC Women's Ultra Mega50 mg
- Energy & Metabolism VanillaGNC Mega Men50 mg
- Energy +Noor Vitamins4.5 mg
- Energy And MetabolismGNC Women's Ultra Mega50 mg
- Energy And StressVitabase20 mg
- Energy B-ComplexRainbow Light · off the market50 mg
- Energy B-Complex Adult GummiesKirkland Signature0.15 mg
- Energy B-Complex Plus Vitamin CRainbow Light · off the market50 mg
- Energy BalanceCountry Life Gut Connection1.08 mg
- Energy Boost Watermelon Drink MixPremama1 mg
- Energy Boosters Delicious Cherry Flavored Chewable WafersGreens Today5 mg
- Energy Boosters Formula Chewable Vitamins Tangy Citrus FlavorGreens Today · off the market5.2 mg
- Energy C with Electrolytes Natural Orange FlavorSwanson Ultra · off the market0.38 mg
- Energy C with Electrolytes Natural Orange FlavorSwanson0.38 mg
- Energy CapsuleOceanus Naturals0.75 mg
- Energy ChocolateGNC Mega Men · off the market50 mg