B-100 Caps provide a full complement of B-vitamins plus Choline and Inositol. These vitamins work to support energy production. maintain healthy homocysteine metabolism. and promote the health of the nervous system.* B-vitamins are water soluble. and with the exception of B-12. have limited storage in the body and thus require daily replenishment. While B-12 is stored in the liver. dietary sources are of animal origin only (meat and dairy) and supplementation with B-12 may be especially important for vegetarians.