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Vitamin B1: Thiamine
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What is Vitamin B1?

Thiamine or thiamin, also known as vitamin B1, is one of the B vitamins.

It is a colorless compound, soluble in water and insoluble in alcohol.

The History of Vitamin B1

Thiamine was first discovered in 1910 by Umetaro Suzuki in Japan when researching how rice bran cured patients of beriberi. He named it aberic acid. It was first crystallized by Jansen and Donath in 1926 they named it aneurin.

Its chemical composition and synthesis was finally reported by Robert R. Williams in 1935. He also coined the name for it: thiamine.

Thiamine in the Human Body

Also known as vitamin B1, thiamine plays an important role in helping the body metabolize carbohydrates and fat to produce energy. It is essential for normal growth and development and helps to maintain proper functioning of the heart and the nervous and digestive systems. Thiamine is water-soluble and cannot be stored in the body; however, once absorbed, the vitamin is concentrated in muscle tissue.

Thiamine as an insect repellent

Some studies suggest that taking thiamine (vitamin B1) 25 mg to 50 mg three times per day is effective in reducing mosquito bites. A large intake of Thiamine produces a skin odor that is not detectable by humans, but is disagreeable to female mosquitoes.

Thiamine takes more than 2 weeks before the odor fully saturates the skin. With the advances in topical preparations there is an increasing number of Thiamine based repellent products. Whilst there is considerable anecdotal evidence of Thiamine products being effective in the field (Australia, US and Canada), there has yet to be any clinical trials run to demonstrate the efficacy of these products.


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