Source Naturals Vitamin B-50 Complex 50mg Supports Energy Production - 250 Tablets Package Quantity:1 B-vitamins are essential components of numerous key enzyme systems, without which the body cannot function. Each B-vitamin fills a different complementary need, which is why they should most often be taken together. B-vitamins act as coenzymes to catalyze numerous biochemical reactions. Features: B-vitamins are essential components of numerous key enzyme systems. Without B-vitamins the body cannot function properly. Each B-vitamin fills a different complementary need, which is why they should most often be taken together. B-vitamins act as coenzymes to catalyze numerous biochemical reactions. Contains essential B-vitamins: Thiamin (vitamin B-1), Riboflavin (vitamin B-2), Niacinamide, Vitamin B-6 (as pyridoxine HCI), Folate (as folic acid), Vitamin B-12 (as cyanocobalamin.) Product Details: Item Weight: 9.4 ounces Shipping Weight: 9.6 ounces Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues. International Shipping: This item is not eligible for international shipping. Learn More UPC: 021078004226 Item model number: SN0422