Make sure you mention it to your doctor right away. Risperidone increases prolactin levels, sometimes to extraordinary levels.

The patient hand-out says: "This medication may in rare instances increase your blood level of a certain hormone (prolactin). In females, an increase in prolactin levels may result in unwanted breast milk, the end of menstruation or difficulty becoming pregnant. In males, it may result in decreased sexual ability, inability to produce sperm, or enlarged breasts. If you develop any of these symptoms, tell your doctor immediately."

Tell your doctor immediately is just what I would do.

Lar