Source Naturals Advanced B12 Complex Sublingual 5 mg. - 30 Tablets Size:30 Contains two active, coenzymated forms of vitamin B-12, methylcobalamin and adenosylcobalamin;Coenzyme supplementation bypasses the body's need to synthesize the active forms of vitamin B-12;Required for normal cell growth, cell reproduction, and the formation of red blood cells Features: Contains two active, coenzymated forms of vitamin B-12, methylcobalamin and adenosylcobalamin Coenzyme supplementation bypasses the body's need to synthesize the active forms of vitamin B-12 Required for normal cell growth, cell reproduction, and the formation of red blood cells Combines the two active, coenzymated forms of vitamin B-12 - methylcobalamin and adenosylcobalamin Helps in the formation of red blood cells Pioneered the concept with wellness formula Product Details: Product Dimensions: 1.7 x 1.7 x 3 inches ; 0.16 ounces Shipping Weight: 0.8 ounces Domestic Shipping: Item can be shipped within U.S. International Shipping: This item is not eligible for international shipping. Learn More UPC: 021078014805 Item model number: SN1480