Pregnacare is recommended before conception to build up the stores of nutrients such as iron in women. good nutrition is important to help prepare a woman's body for the additional demands placed on it during pregnancy. certain nutrients, like folic acid, vitamin b12 and zinc are also of particular importance from the very first moment of conception. zinc contributes to normal fertility and reproduction whilst vitamin b12 contributes to normal red blood cell formation and also has a role in the process of cell division.