In addition to providing sustenance and its nutritive value, people take thiamin for conditions related to low levels of thiamin (Thiamin deficiency syndromes), including beriberi and inflammation of the nerves outside the brain (Peripheral neuritis) associated with pregnancy or with a vitamin deficiency disease called pellagra sona thiamin provides 100Mg of vitamin b1 which is important for normal energy metabolism, the normal function of the nervous system, normal psychological function and the normal function of the heart thiamin has a role in energy metabolism in all cells of the body