Valcyte® is a prescription antiviral medicine. in adults, valcyte tablets are used: 1. to treat cytomegalovirus (cmv) retinitis in people who have acquired immunodeficiency syndrome (aids). when cmv virus infects the eyes, it is called cmv retinitis. if cmv retinitis is not treated, it can cause blindness. 2. to prevent cmv disease in people who have received a kidney, heart, or kidney-pancreas transplant and who have a high risk for getting cmv disease. valcyte does not cure cmv retinitis. you Valcyte can cause serious side effects, including: 1. blood and bone marrow problems. valcyte can affect the bone marrow lowering the amount of your white blood cells, red blood cells, and platelets and may cause serious and life-threatening problems. 2. kidney failure. kidney failure may happen in people who are elderly, people who take valcyte with certain other medicines, or people who are not adequately hydrated. 3. fertility problems. valcyte may lower sperm count in males and cause fert Si...