Thiamine (Vitamin B1)
How does Thiamine (vitamin B1) work?
Thiamine is required by our bodies to properly use carbohydrates.
Are there safety concerns?
Thiamine is LIKELY SAFE
when taken by mouth in appropriate amounts, although rare allergic
reactions and skin irritation have occurred. It is also LIKELY SAFE
when given appropriately intravenously (by IV) by a healthcare provider. Thiamine shots are an FDA-approved prescription product.
Thiamine might not properly enter the body in some people who have liver
problems, drink a lot of alcohol, or have other conditions.
Special Precautions & Warnings:
Pregnancy and breast-feeding
: Thiamine is LIKELY SAFE
or breast-feeding women when taken in the recommended amount of 1.4 mg daily. Not enough is known about the safety of using larger amounts during pregnancy or breast-feeding.
Dosing considerations for Thiamine (vitamin B1).
The following doses have been studied in scientific research:
- For adults with somewhat low levels of thiamine in their body (mild thiamine deficiency): the usual dose of thiamine is 5-30 mg daily in either a single dose or divided doses for one month. The typical dose for severe deficiency can be up to 300 mg per day.
- For reducing the risk of getting cataracts: a daily dietary intake of approximately 10 mg of thiamine.
As a dietary supplement in adults, 1-2 mg of thiamine per day is commonly used. The daily recommended dietary allowances (RDAs) of thiamine are: Infants 0-6 months, 0.2 mg; infants 7-12 months, 0.3 mg; children 1-3 years, 0.5 mg; children 4-8 years, 0.6 mg; boys 9-13 years, 0.9 mg; men 14 years and older, 1.2 mg; girls 9-13 years, 0.9 mg; women 14-18 years, 1 mg; women over 18 years, 1.1 mg; pregnant women, 1.4 mg; and breast-feeding women, 1.5 mg.