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 84 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Keto-Karma Burn Fat RedIrwin Naturals0.5 mg
- Ketogenic Collagen Chocolate FlavorMetagenics0.37 mg
- Ketogenic Collagen NakedMetagenics0.37 mg
- Ketogenic Collagen Naked UnflavoredMetagenics0.37 mg
- Ketogenic Collagen Phyto Moringa Berry FlavorMetagenics · off the market0.37 mg
- Ketogenic Collagen Vanilla FlavorMetagenics0.37 mg
- Ketogenic Meal Shake Chocolate CreamKeto Science · off the market0.157 mg
- Ketogenic Meal Shake Vanilla CreamKeto Science · off the market0.157 mg
- KetoSlim Chocolate Almond CrunchNature's Plus · off the market0.375 mg
- Ketoslim VanillaNature's Plus · off the market8.3 mg
- Kh-6JJJ Distributors50 mg
- Kicks ChocolateDixie Botanicals35 mg as transcribed, likely a slip
- Kicks Sour AppleDixie Botanicals35 mg as transcribed, likely a slip
- Kid Natural Absolutely Delicious Natural Fruit FlavorHealthy 'N Fit3.4 mg
- Kid Natural Fruit FlavorHealthy 'N Fit3.4 mg
- Kid Vits Berry BlastNOW · off the market1.5 mg
- Kid Vits Berry BlastNOW Kids · off the market1.5 mg
- Kid Vits Juicy OrangeNOW Kids1.5 mg
- Kid Vits Orange SplashNOW · off the market1.5 mg
- Kid's B ComplexMegaFood1.5 mg
- Kid's Chewable Multi-Vitamin Cherry Flavored365 Everyday Value1.5 mg
- Kid's Chewable Natural Fruit FlavorFoster Regal1 mg
- Kid's Chewable Vitamins & Minerals Blue Raspberry FlavorCarlson1.5 mg
- Kid's Chewable Vitamins and Minerals Blue Raspberry FlavorCarlson · off the market1.5 mg
- Kid's Daily One ChewableQuest · off the market1 mg
- Kid's Factors Daily Nutrient Boost With Whey ProteinNatural Factors20 mg
- Kid's Factors Wild Berry Smoothie MixNatural Factors20 mg
- Kid's MultiInnate Response Formulas1.7 mg
- Kid's Multi Citrus PunchTrace Minerals Research · off the market1.5 mg
- Kid's Multi Gummy Bears Natural Raspberry FlavorCarlson0.6 mg
- Kid's Multi Tropical PunchTrace Minerals1.5 mg
- Kid's Multi With ConcenTrace Citrus PunchTrace Minerals Research1.5 mg
- Kid's Multivitamin Gummies Blueberry FlavoredRainbow Light · off the market1.2 mg
- Kid's One Fruit PunchRainbow Light · off the market2 mg
- Kid's One Fruit Punch FlavoredRainbow Light2 mg
- Kid's StuffVitabase2 mg
- Kid's Stuff Complete With Probiotics Cherry FlavorVitabase1.5 mg
- KidaminsCalifornia Academy of Health3.3 mg
- Kidney Caretnvitamins12.5 mg
- Kidney CleanseHealth Plus50 mg
- Kidney Cleanse + FlowAlerna Kidney Health · off the market1.5 mg
- Kidney EssentialsSwanson Condition Specific Formulas · off the market12.5 mg
- Kidney EssentialsSwanson12.5 mg
- Kidney HealthSNAP1.2 mg
- Kids And Teens Growth Protein Shake ChocolateTruHeight25 mg
- Kids And Teens Growth Protein Shake VanillaTruHeight25 mg
- Kids Appetite BoosterTruHeight0.9 mg
- Kids Cherry BerryGarden of Life Vitamin Code · off the market2 mg
- Kids Cherry Berry FlavorGarden of Life Vitamin Code1.2 mg
- Kids Chewable DailyNutrilite · off the market1.5 mg