Which b vitamin is thiamine?

Thiamin, aka aneurine hydrochloride and thiamine, is vitamin B1. It was first discovered, in 1910, by Japanese researcher Umetaro Suzuki. Suzuki was investigating why rice bran was a successful treatment for beriberi. But it was only much later that the vitamin's chemistry was understood, and its more correct naming given, in 1933-1935, by Robert R. Williams, an American telephone company researcher whose hobby was vitamin research. Thiamin's needed for nerves to work, and carbohydrates to burn for body energy. Its absence results in beriberi, which attacks the heart and the nervous system. Entry-level signs of beriberi aren't distinct or unusual enough to direct sufferers to the disease's origin in their nutrient-deficient diet: weight loss, irritability, and confusion.