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 164 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Stress SupportZoi Research25 mg
- Stress Support FormulaElevate Recovery Supplements · off the market2 mg
- Stress Support PackDouglas Laboratories50 mg
- Stress Vitamin B Complex With Vitamin CNature's Harmony25 mg
- Stress-B 100Highland Laboratories100 mg
- Stress-B-PlusDouglas Laboratories55 mg
- Stress-B-Plus (Vitamin B Complex)Douglas Laboratories · off the market55 mg
- Stress-Calm 160 PlusGreat Earth · off the market160 mg
- Stress-DefyIrwin Naturals26 mg
- Stress-Free B W/CSource For Wellness · off the market75 mg
- Stress-PlexDouglas Laboratories30 mg
- Stress-PlexPriority One Nutritional Supplements99 mg
- Stress-Plex-ForteDouglas Laboratories55 mg
- Stress-XTrace Minerals Research10 mg
- Stress/Anxiety ManagementfemMED10 mg
- Stress/PAN-FNutri-West2 mg
- StressAssistFuturebiotics25 mg
- Stressed OutVita Logic100 mg
- StresstabsInternational Vitamin Corporation10 mg
- Stresstabs AdvancedInternational Vitamin Corporation1.5 mg
- StressvedaFlora0.3 mg
- Stressyl +BioPerineApproved Science20 mg
- StrikerAB Combination · off the market0.75 mg
- Strip Complete Body Cleanser Fruit PunchCovert Labs · off the market10 mg
- Strip Complete Body Cleanser GrapeCovert Labs · off the market10 mg
- Strip NC Complete Body Cleanser Fruit FlavorCovert Labs · off the market40 mg
- Strip NC Extra Strength Liquid Fruit PunchWellgenix · off the market2.5 mg
- Strip NC Extra Strength Liquid GrapeWellgenix · off the market2.5 mg
- Strip NC Extra Strength Liquid OrangeWellgenix · off the market2.5 mg
- Strip NC Natural Cleanser Fruit PunchWellgenix · off the market80 mg
- Strip NC Natural Cleanser GrapeCovert Labs · off the market80 mg
- Strong Multi-VitaminBare Performance Nutrition8.5 mg
- Strovite One Caplets Iron FreeEverett Laboratories20 mg
- Sublingual Liquid B-12 2000 mcg with B-ComplexSolgar4 mg
- Sucontral DEuroMedica0.7 mg
- Sucontral DTerry Naturally0.7 mg
- Sugar BalanceBlackmores5.7 mg
- Sugar Free Children's chewableKirkland Signature0.75 mg
- Sugar Metabolism FactorsMichael's Naturopathic Programs · off the market150 mg
- Sugar Metabolism FactorsMNP Michael's Naturopathic Programs · off the market150 mg
- Sugar Metabolism FactorsMH Michael's Health Naturopathic Programs150 mg
- Sugar/Glucose Metabolism FactorsMichael's Naturopathic Programs · off the market150 mg
- SukrolLaboratorio Farmamedica10 mg
- SunriseKyani3 mg
- Super 1 DailyCarlson15 mg
- Super 2 DailyCarlson15 mg
- Super 2 Daily Vitamins & MineralsCarlson · off the market15 mg
- Super 75 Vitamins & MineralsCarlson75 mg
- Super Adrenal CleanseHealth Plus35 mg
- Super Advanced Shred Igniter Raspberry LemonadeBody Fortress2.4 mg