Vitamin B1 (thiamine) is a water-soluble B vitamin required by the nervous & digestive systems, muscles & the heart. Bio Care's Vitamin B1 provides 100mg per capsule.• Vitamin B1 helps to maintain the function of the nervous system, muscles & the heart • Vitamin B1 helps to keep mucus membranes healthy • Vitamin B1 promotes growth & development • Vitamin B1 is needed in cases of alcohol or drug abuse as these deplete the bodys supply of the nutrient • A deficiency of vitamin B1 in the diet can lead to Beriberi • May be useful for low energy levels & dealing with the pressures of a modern lifestyle • May help support appetite & mental alertness • Yeast free