It is very important that your doctor check your progress at regular visits to allow changes in your dose and to check for any unwanted effects.
This medicine may cause uncontrolled sudden movements (dyskinesia) or make such movements you already have worse or more frequent. Tell your doctor if this happens.
If you develop any unusual or strange thoughts and behavior while using this medicine, be sure to discuss it with your doctor. Other changes might be confusion, delusion (believing things that are not real), hallucinations (seeing or hearing things that are not there), getting paranoid, suicidal thoughts, and unusual excitement, nervousness, or irritability.
Some people who have used this medicine had unusual changes in their behavior. Talk with your doctor right away if you start having problems with gambling or an increased interest in sex while using this medicine.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (eg, St. John's wort) or vitamin supplements.