risperidone, Risperdal; Risperdal Consta, Risperdal M-TAB

  • Pharmacy Author:
    Omudhome Ogbru, PharmD

    Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.

  • Medical and Pharmacy Editor: Jay W. Marks, MD
    Jay W. Marks, MD

    Jay W. Marks, MD

    Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.

Coping With Schizophrenia

DRUG INTERACTIONS: Risperidone may interfere with elimination by the kidneys of clozapine (Clozaril), a different type of antipsychotic medication, causing increased levels of clozapine in the blood. This could increase the risk of side effects from clozapine.

Serotonin reuptake inhibitors such as paroxetine (Paxil), Sertraline (Zoloft), and fluoxetine (Prozac) when taken with risperidone causes the metabolism (breakdown) of risperidone by the liver to be inhibited, which in turn causes elevated blood levels of risperidone and may increase the risk of adverse reactions from risperidone.

Antifungal drugs such as fluconazole (Diflucan), itraconazole (Sporanox), and ketoconazole (Nizoral) when taken with risperidone also cause the metabolism (breakdown) of risperidone by the liver to be inhibited, which in turn causes elevated blood levels and may increase the risk of adverse reactions from risperidone.

PREGNANCY: There are no adequate studies of risperidone in pregnant women. Some unwanted effects have been reported in animal studies. Risperidone can be used in pregnancy if the physician feels that the benefits outweigh the potential but unknown risks.

NURSING MOTHERS: Risperidone is excreted in human breast milk. Women receiving risperidone should not breastfeed.

Medically reviewed by Eni Williams, PharmD

Reference: FDA Prescribing Information

Medically Reviewed by a Doctor on 9/15/2015

Quick GuideSchizophrenia: Symptoms, Types, Causes, and Treatment

Schizophrenia: Symptoms, Types, Causes, and Treatment
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