This formula contains blood building factors iron, Vitamin B12, folic acid, Vitamin C and Liver powder. Some iron supplements tend to cause constipation and gastrointestinal irritation. This unique formula of chelated iron (iron bisglycinate) is especially made for enhanced absorption and is gentle on the body. Iron and Vitamin B12 help regulate the formation of red blood cells, while folic acid helps with regular blood formation. Iron itself helps to build up more haemoglobin. Vitamin C helps the body to absorb iron more quickly and efficiently.