Vitamin B-100 Sustained ReleaseB Complex for Maximum Effectiveness Supports Energy Production* B 100 Tabs 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,