Our B1 (Thiamine) formulated as a fat-soluble form with high bio-availability that lasts longer in the body! Helps fuel your body by converting blood sugar into energy. It keeps your mucous membranes healthy and helps to support the nervous system in addition to its role in releasing energy from nutrients in food. It is also thought to help regulate appetite... in addition, those with chronic fatigue syndorme, and those who undergo a great deal of physical stress or emotional stress can be deficient in B1.