Rho(D) immune globulin is a medication used to prevent Rh immunization in pregnant women who are Rh-negative. When an Rh-negative mother carries an Rh-positive baby, her immune system may produce antibodies against the baby's red blood cells, leading to complications in current or future pregnancies. Administering Rho(D) immune globulin during pregnancy and after delivery helps to prevent the mother's immune system from reacting to the Rh-positive blood cells. This treatment is typically given around the 28th week of pregnancy and within 72 hours after childbirth, ensuring the safety of both mother and baby.