Risperdal (Risperidone) is an antipsychotic agent used to treat emotional and mood disorders.

Possible side effects  if you experience difficulty concentrating or inability to control urination. CONTACT YOUR DOCTOR IMMEDIATELY if you experience symptoms of high blood sugar (such as increased thirst, increased urination, vision changes, confusion, weakness, or unusual drowsiness), muscle spasm or twitching, uncontrolled muscle movements (such as your tongue or facial muscles), drooling, difficulty swallowing, seizures, chest pain, one-sided weakness, numbness in the face/arms/legs, sudden vision changes, slurred speech, unexplained fever, extreme muscle stiffness, fainting, fast or irregular heartbeat, unusual increased sweating, or unusual changes in your mental alertness. Risperdal may in rare instances increase your blood level of prolactin. In females, this rare increase in prolactin levels may result in unwanted breast milk production, stopping of your menstrual period, or difficulty in becoming pregnant. In males, this rare effect may result in decreased sexual ability, inability to produce sperm, or enlarged breasts.