B-complex for optimal efficacy. Promotes energy generation. B-100 capsules contain all of the B vitamins, as well as choline and inositol. These vitamins help to produce energy, regulate homocysteine metabolism, and improve nervous system health. B-vitamins are water-soluble and, with the exception of B-12, have limited store capacity in the body, necessitating daily replenishment. While B-12 is stored in the liver, the only dietary sources are animal-derived (meat and dairy), so B-12 supplementation may be especially useful for vegetarians. &Nubs;.