nefazodone, Serzone

  • 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.

  • Medical and Pharmacy Editor: William C. Shiel Jr., MD, FACP, FACR
    William C. Shiel Jr., MD, FACP, FACR

    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

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Nefazodone may increase the blood concentration of several drugs by reducing their removal by the liver. Through this mechanism nefazodone may markedly increase the blood concentrations of triazolam (Halcion) and alprazolam (Xanax), resulting in excessive sedation and impaired ability to perform tasks. It is recommended that people taking triazolam who need to be started on nefazodone should have their triazolam dose reduced by 75%. Similarly, those people taking alprazolam who need to take nefazodone should have their alprazolam dose reduced by 50%. Nefazodone also may increase the blood concentration and possibly the side effects of eletriptan (Relpax), eplerenone (Inspra), pimozide (Orap), ranolazine (Ranexa), and silodosin (Rapaflo).

Carbamazepine (Tegretol, Tegretol XR, Equetro, Carbatrol) may decrease nefazodone blood levels and possibly its effectiveness by increasing nefadone's removal by the liver. Conversely, nefazodone may increase the levels of carbamazepine, possibly leading to toxicity, by decreasing the removal of carbamazepine by the liver.

Medically Reviewed by a Doctor on 9/12/2014

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