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 191 of 203), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Vitamin B1 100 mgCountry Life100 mg
- Vitamin B1 100 mgNature Made100 mg
- Vitamin B1 100 mgStandard Vitamins · off the market100 mg
- Vitamin B1 100 mgDouglas Laboratories100 mg
- Vitamin B1 100 mgMeijer100 mg
- Vitamin B1 100 mgMason Natural100 mg
- Vitamin B1 100 mgVitamatic100 mg
- Vitamin B1 100 mgNutricost100 mg
- Vitamin B1 100 mgSwanson100 mg
- Vitamin B1 100 mgBluebonnet100 mg
- Vitamin B1 250 mgThe Vitamin Shoppe250 mg
- Vitamin B1 250 mgExchange Select250 mg
- Vitamin B1 250 mgSpring Valley250 mg
- Vitamin B1 250 mgStandard Vitamins · off the market250 mg
- Vitamin B1 300 mgNatures Plus · off the market300 mg
- Vitamin B1 300 mg Sustained ReleaseNaturesPlus · off the market300 mg
- Vitamin B1 500 mgNutraBio500 mg
- Vitamin B1 500 mgDr. Clark Store500 mg
- Vitamin B1 500 mgStandard Vitamins · off the market500 mg
- Vitamin B1 500 mgDr. Clark Research Association Dr. Clark Zentrum500 mg
- Vitamin B1 500 mgVitamatic500 mg
- Vitamin B1 500 mgNutricost500 mg
- Vitamin B1 500 MilligramsNutraBio · off the market500 mg
- Vitamin B1 High Potency 500 mgBIOVEA500 mg
- Vitamin B1 Thiamine Mononitrate Capsules 100 mgBulkSupplements.com100 mg
- Vitamin B12Natures Plus Source of Life Garden1 mg
- Vitamin B12 100ProCaps Laboratories5 mg
- Vitamin B12 250ProCaps5 mg
- Vitamin B12 500ProCaps Laboratories5 mg
- Vitamin B12-250ProCaps Laboratories5 mg
- Vitamin B75Nature's Harmony75 mg
- Vitamin C 1000 mgNutraA2Z0.36 mg
- Vitamin C 1000 mg Lemon Lime Flavored Drink MixResistance C0.38 mg
- Vitamin C 1000 mg Orange Flavored Fizzy DrinkCVS Health0.38 mg
- Vitamin C 1000 mg Plus Probiotics Juicy OrangeGNC · off the market0.38 mg
- Vitamin C 1000 mg Raspberry Flavored Drink MixResistance C0.38 mg
- Vitamin C 1000 mg Tangerine Flavored Drink MixResistance C0.38 mg
- Vitamin C 1000 mg Tangerine-Flavored Fizzy DrinkCVS Pharmacy0.38 mg
- Vitamin C 500 + B-ComplexProCaps Laboratories10 mg
- Vitamin C 500 plus B-ComplexProCaps Laboratories · off the market10 mg
- Vitamin C Effervescent Powder Blend Orange FlavorWell At Walgreens0.4 mg
- Vitamin D & CalciumEmergen-C0.19 mg
- Vitamin D & Calcium Mixed BerryEmergen-C0.19 mg
- Vitamin EssentialsSundown Naturals80 mg
- Vitamin Mineral Fusion Fruit Punch FlavorInfoWars Life2 mg
- Vitamin Mineral RushSunwarrior · off the market1.2 mg
- Vitamin Mineral Rush in Aloe Vera SuperjuiceSunwarrior1.2 mg
- Vitamin TMuscleMeds25 mg
- Vitamin TabletDermetRx Pharmaceuticals · off the market3 mg
- Vitamin, Mineral and Amino Acid SupplementMagnus1.5 mg