Help plz! Can schizophrenia medication cause a man to become sterile?

Yes. Antipsychotics causes Dopamine blockade increasing levels of Prolactin which causes unovulation and irregular menstrual cycles due to decrease levels of Follicle stimulating hormones and Estrogen. It also causes decrease libido, galactorrhea and osteoporosis. For man, the there is decrease in testosterone and galactorrhea and decrease libido.