Multi B from Seroyal is a B complex vitamin supplement that contains all eight B vitamins, including biotin, folate, thiamin, and more. B vitamins are a family of nutrients that work in the body and support a number of processes. These processes include support for healthy energy production, and support for healthy carbohydrate, fat, and protein metabolism. These vitamins may also promote blood cell health and tissue health, and folate/folic acid protects against neural tube defects.