The Vitamin B-Complex \'\'50\'\' is a high potency Vitamin B-Complex delivering a 50 mg dose of key B vitamins. Many B vitamins are interdependent, and thus it is best to take them in combination, such as through a B-complex or a multiple vitamin containing a B-complex. Solgar\'s unique formula delivers Thiamine (B1), Riboflavin (B2), Niacin (B3), Pantothenic Acid (B5), and Vitamin B6, along with other B vitamins such as Folic Acid, Biotin (B7) and Vitamin B12. B vitamins are essential nutrients required by the body. They help our bodies convert food into energy, allowing us to stay energised throughout the day, as well as supporting our mental performance.