Thiamin Involved in the release of energy from carbohydrate. It is important for the brain and nerves which use glucose for their energy needs. Cereals, nuts and pulses are rich sources. Green vegetables, pork and fruits and fortified cereals contain thiamin. Deficiency leads to beri-beri.
Alcoholics sometimes develop deficiency.
The body excretes excess thiamin. Riboflavin Involved in energy release, especially from fat and protein. Rich sources are liver, milk, cheese, yogurt, eggs, green vegetables and yeast extract, and fortified cereals. Deficiency includes changes to the mucous membrane and skin around the mouth and nose. The body excretes excess riboflavin.