The group of vitamins collectively known as B-complex includes all of the essential water-soluble vitamins except for vitamin C. Bariatric Advantage B-50 Complex is a high-potency capsule for those in need of additional B-vitamin nutrition. These small, easy-to-digest capsules contain all the essential B-vitamins in substantial doses plus the accessory B vitamins choline, inositol, and PABA. Bariatric Advantage B-50 includes the activated forms of several key B-vitamins to support increased bioavailability and function.