Thiamin is a vitamin B complex. Thiamin aids in making energy through the metabolism of carbohydrates. A deficiency results in a disease known as Beriberi. Symptoms include weakness, loss of appetite, irritability, nervous tingling throughout the body, poor arm and leg coordination, and muscle pain deep in the calves.

recommendation: 1.5 mg for men, 1.1 mg for women.
foods in: whole grains, green beans, peanuts, pork, and sunflower seeds.

A B-complex vitamin, C12 H17 Cl N4 O5, produced synthetically in the bran coat of grains, in yeast, and in meat, that is necessary for carbohydrate metabolism, maintenance of normal neural activity, and the prevention of beriberi.