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. As a family-owned company since 1968 ? NOW produces high-quality natural products at prices everyone loves. We are a respected leader in the natural products industry with a mission to provide value in products and services that empower people to lead healthier lives.