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 109 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- MorphomultiMN Morphogen Nutrition600 mg as transcribed, likely a slip
- Mother & ChildPure Essence30 mg
- Mother Kare Prenatal MultivitaminNature's Gifts · off the market1.6 mg
- Mother Nature PrenatalUC UltraChamp · off the market1.8 mg
- Mother to BePure Essence17 mg
- MRP Active ChocolateNutracore Nutrition · off the marketin a blend
- MRP Active Milk And CookiesNutracore Nutrition · off the marketin a blend
- MRP Active VanillaNutracore Nutrition · off the marketin a blend
- MRP All Natural Meal-Replacement Shake ChocolatePure Advantage · off the market13 mg
- MRP All Natural Meal-Replacement Shake VanillaPure Advantage · off the market13 mg
- MRP Apple Crumb CakeCore Nutritionals0.39 mg
- MRP Banana CreamCore Nutritionals0.39 mg
- MRP Blueberry Crumb CakeCore Nutritionals0.42 mg
- MRP Carrot CakeCore Nutritionals0.42 mg
- MRP ChocolatePure Advantage13 mg
- MRP Chocolate Caramel Candy BarCore Nutritionals0.42 mg
- MRP Chocolate MilkshakeNutraBio0.75 mg
- MRP Cinnamon and Brown SugarCore Nutritionals0.42 mg
- MRP Classic VanillaCore Nutritionals0.39 mg
- MRP Creamy VanillaNutraBioanother unit
- MRP Double Chocolate Oatmeal CookieCore Nutritionals0.42 mg
- MRP Peanut Butter Oatmeal CookieCore Nutritionals0.42 mg
- MRP Pumpkin PieCore Nutritionals0.42 mg
- MRP Rich ChocolateCore Nutritionals0.39 mg
- MRP S'MoresCore Nutritionals0.42 mg
- MRP SnickerdoodleCore Nutritionals0.39 mg
- MRP VanillaPure Advantage13 mg
- MRP Vanilla PoundcakeCore Nutritionals0.42 mg
- MulgatolSanofi-Aventis0.7 mg
- Mulltivitamin Women 50+Well At Walgreens1.1 mg
- MultiAyush Herbs20 mg
- MultiVivioptal5 mg
- MultiGevitta · off the market1.5 mg
- MultiSwanson · off the market50 mg
- MultiNatures Plus BrainCeutix · off the market3 mg
- MultiMyBite Vitamins0.3 mg
- MultiBlackstone Labs18 mg
- MultiNature Made1.5 mg
- MultiAmvilab50 mg
- MultiCore Nutritionals100 mg
- Multiyoutheory50 mg
- MULTI (hers)Millecor7 mg
- MULTI (his)Millecor7 mg
- Multi +Garden of Life Dr. Formulated1.2 mg
- Multi + AntioxidantsFemMed20 mg
- Multi + AshwaghandaNature Made1.5 mg
- Multi + ElderberryNature Made1.5 mg
- Multi + OmegaHero Nutritionals Yummi Bears Organics Super0.05 mg
- Multi + OmegaHero Nutritionals Yummi Bears Super0.05 mg
- Multi + Omega-3Carlson7.5 mg