B-50 Tabs contain all B vitamins plus choline and inositol. These vitamins help with energy production, homocysteine metabolism, and nervous system health. * B-vitamins are water soluble and, except for B-12, have limited body storage, necessitating daily replenishment. While B-12 is stored in the liver, it is only found in animal products (meat and dairy), so vegetarians may need to supplement.