What Is Risperidone?

Potential Medication Interactions

Taking risperidone with opioid pain relievers such as morphine, codeine, tramadol, or fentanyl could increase the drowsiness patients experience. Patients who use risperidone with gabapentin, lorazepam, diazepam, or certain antihistamines such as promethazine are also at an increased risk for experiencing sleepiness. Using risperidone with amiodarone and other medicines that treat abnormal heart rhythms could lead to an increased risk of heartbeat irregularities during treatment. If diuretics are taken with risperidone, patients could see changes in their potassium, which could lead to irregular heartbeats. This medication is known to increase the effects of medicines designed to reduce blood pressure, and patients may need to have their blood pressure medication dosage adjusted during treatment with risperidone to prevent low blood pressure. Patients taking certain antidepressants such as fluoxetine and certain anticonvulsants such as carbamazepine may need to have the doses of these medications adjusted while on risperidone too.