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THE CATEGORY GUIDE

Vitamin B1

Thiamin supports metabolism; a high-dose label is a separate claim.

Vitamin B1, or thiamin, is needed for normal cellular function and the metabolism of food. This category includes ordinary nutrient supplements and higher-strength products marketed for nerve or metabolic health; those uses should not be merged.

Brand-independent category guide · Sources checked 2 November 2026
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Three things to remember

  1. Thiamin, thiamine and vitamin B1 refer to the same nutrient.
  2. Benfotiamine is a different preparation; its marketing does not establish universal superiority.
  3. A nutrient's role in energy metabolism does not show that extra intake provides a stimulant effect.

What the evidence supports

Correcting thiamin deficiency is important. Severe deficiency can affect the nervous system and heart, and risk can rise with alcohol dependence or after bariatric surgery. Whole grains, legumes and certain meats are dietary sources.

Research into thiamin or benfotiamine for diabetes-related nerve problems and other conditions does not establish a general retail treatment. A comparison page should not turn an area of research into a promise of relief.

Sources: Thiamin fact sheet — NIH Office of Dietary Supplements (consumer) ↗

Forms on the label

Thiamin hydrochloride and thiamin mononitrate are common supplemental forms. Benfotiamine is a synthetic derivative used in some products.

Keep the form next to the stated amount. A paper about a particular benfotiamine preparation cannot simply be applied to an ordinary low-strength B1 tablet. If a label reports derivative mass without a clear vitamin declaration, record the figure as written rather than assuming it is directly equivalent to another form's nutrient amount.

Sources: Thiamin fact sheet — NIH Office of Dietary Supplements (consumer) ↗

US reference amounts

US/NASEM adult RDAs are 1.2 mg/day for men and 1.1 mg/day for women, counting food and supplements together. Pregnancy and breastfeeding references are 1.4 mg/day.

These modest total-intake references are not a treatment plan for deficiency or neurological disease. Comparing a supplement with a reference value identifies scale; it does not prove that the multiple is useful. Symptoms potentially related to severe deficiency need clinical assessment rather than a stronger product chosen from a ranking.

Sources: Thiamin fact sheet — NIH Office of Dietary Supplements (consumer) ↗

Hypothetical serving arithmetic

A ₹240 pack contains 60 tablets providing 1.2 mg B1 per tablet. It costs ₹4 per labelled serving and contains 72 mg in the pack. A ₹300 pack contains 90 tablets, with two tablets providing 1.2 mg: 45 servings at about ₹6.67.

The larger tablet count therefore provides fewer complete comparison servings. The two products supply the same declared amount at their respective servings, but a B-complex version may also introduce other nutrients. Compare those additions separately.

Safety and medicine context

ODS reports no established harm from thiamin intake, but this should not become a claim that any dose or combination is beneficial. Furosemide and fluorouracil can lower thiamin levels.

The relevant problem may be medicine-related loss or impaired intake rather than which bottle has the most tablets. Higher-dose clinical use has a different purpose from ordinary nutrition. A combination's safety also depends on its other ingredients, even if B1 itself is well tolerated.

Sources: Thiamin fact sheet — NIH Office of Dietary Supplements (consumer) ↗

How to choose a clear listing

Record B1 amount, form, complete serving, total servings and whether the product is standalone or combined. Search results should retain the B1 name so it is not confused with B12; the extra digit identifies a different vitamin, not a stronger version.

Avoid giving unexplained nerve-support language the same status as a disclosed ingredient amount. When two products use different preparations, the comparison can show their differences honestly without forcing a clinical equivalence that has not been demonstrated.

Common questions

Is thiamin the same as thiamine?

Yes. Both spellings refer to vitamin B1.

Can I assume benfotiamine and an ordinary B1 tablet have identical evidence?

No. The preparation, amount, population and outcome studied all matter.

WHEN YOU’RE READY TO COMPARE

Take the knowledge with you.

Compare the same form, active amount and intended use before comparing price. India and International listings have separate filters; some categories may have no listings in one market. Listings do not establish local stock or a need for a supplement. Shopping disclosures appear on product pages.

Sources & scope

This is a brand-independent editorial summary of the sources below, not an independent clinical review. Published reference values apply to their stated populations. Ingredient research does not verify a particular brand, batch or seller. No individual diagnosis, deficiency test or medical assessment is performed here.

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