This supplement is a blend of B vitamins that is used to treat or prevent vitamin deficiency caused by a poor diet, certain illnesses, alcoholism, or pregnancy. Vitamins are essential bodily building blocks that aid in maintaining excellent health. Thiamine, riboflavin, niacin/niacinamide, vitamin B6, vitamin B12, folic acid, and pantothenic acid are all B vitamins. Some B vitamin products additionally include substances including vitamin C, vitamin E, biotin, and zinc. If you have any questions about the ingredients in your brand, go to your doctor or pharmacist.