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 17 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- ARM Plus+ Intense StrawberryMax Muscle Nutrition1.7 mg
- ARM Plus+ Orange Citrus BlastMax Muscle Nutrition1.7 mg
- ARM Plus+ Peach Mango RushMax Muscle Nutrition1.7 mg
- ARM Plus+ Tropical Fruit PunchMax Muscle Nutrition1.7 mg
- ARM Plus+ Watermelon SplashMax Muscle Nutrition1.7 mg
- Armor-VMusclePharm · off the market16 mg
- Armor-V Multi-Nutrient ComplexMP MusclePharm16 mg
- Arnold Iron PackMusclePharm19 mg
- Arnold Iron PackArnold Schwarzenegger Series0.019 mg as transcribed, likely a slip
- Arsenal Training PacksMET-Rx52 mg
- Arth-Support FormulaDouglas Laboratories Ultra Preventive 2000 Series · off the market50 mg
- Arth-Support FormulaDouglas Laboratories · off the market50 mg
- Arthro-SynDouglas Laboratories40 mg
- AS 10 LifeAmeriSciences · off the market2.25 mg
- AS 10 LifeNugevity2.25 mg
- Assure Detox Straw-Mango FlavorTotal Eclipse80 mg
- Assure Detox Strawberry MangoTotal Eclipse · off the market80 mg
- Assure Detox Tropical FlavorTotal Eclipse80 mg
- Astra-Vites Fruit FlavorDouglas Laboratories3 mg
- At EaseRedd Remedies12 mg
- At Ease PMRedd Remedies6 mg
- Athlete FormulaNutrina · off the market350 mg
- Athlete's BCAA Fruit PunchDymatize · off the market1.5 mg
- Athlete's BCAA WatermelonDymatize · off the market1.5 mg
- Athletic Greens Ultimate DailyAthletic Greens3 mg
- Athletic NutrientsPure Encapsulations8 mg
- Athletic Pure PackPure Encapsulations12.5 mg
- Athletic Recovery Strawberry LemonadeFITAID1.2 mg
- Atlas ChocolateLegion · off the market1.2 mg
- Atlas Dutch ChocolateLegion1.2 mg
- AtpBioFactor30 mg
- AtpMeehan Formulations18 mg
- ATP Ignite Natural Citrus FlavorXYMOGEN0.45 mg
- ATP Ignite Natural Mixed Berry FlavorXYMOGEN0.45 mg
- ATP Ignite Workout Natural Mixed Berry FlavorXYMOGEN · off the market0.45 mg
- ATP Natural Citrus FlavorAdaptogen Research0.45 mg
- ATP-Fuel Natural Peppermint Vanilla FlavorVitaMist5 mg
- Attack 3.0 Orange FlavourBody Attack Sports Nutrition0.55 mg
- AttentionLiquid Health6 mg
- AttentionBodSmith · off the market6 mg
- Attention Fruit FlavorLiquid Health6 mg
- Aved-Digest MultiAnabolic Laboratories · off the market20 mg
- Aved-Eze MultiAnabolic Laboratories · off the market3 mg
- Aved-KidsAnabolic Laboratories · off the market1.5 mg
- Aved-Kids Natural Berry FlavorAnabolic Laboratories · off the market1.5 mg
- AVED-MultiAnabolic Laboratories · off the market20 mg
- Aved-Multi Iron FreeAnabolic Laboratories · off the market20 mg
- AVED-Multi SoftgelAnabolic Laboratories · off the market50 mg
- AVED-Prenatal MultiAnabolic Laboratories · off the market3 mg
- Avlimil MultiVianda2.6 mg