Most medications can cause side effects which can be defined as an unwanted response to a medication when it is taken in normal doses. Side effects can range from mild or severe, temporary or permanent. Side effects are not experienced all patients who take this medication. Many side effects can be managed, and others may go away over time. Contact your doctor if you experience these side effects, if they become severe or bothersome. decreased interest in sex, decreased volume of ejaculate, erectile dysfunction, testicular pain breast enlargement, tenderness, lumps, or nipple discharge, signs of an allergic reaction including (e.g., skin rash, itchiness, hives, swelling of the lips or tongue)