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Polypharmacy or medication washout: an old tool revisited


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Authors: Hoffman DA, Schiller M, Greenblatt JM, Iosifescu DV

Published Date October 2011 Volume 2011:7(1) Pages 639 - 648

Daniel A Hoffman1, Mark Schiller2, James M Greenblatt3, Dan V Iosifescu4
1Neuro-Therapy Clinic Inc, Denver, CO; 2Mind Therapy Clinic, 2299 Post Street, Suite 104A, San Francisco, CA; 3Comprehensive Psychiatric Resources, Waltham, MA; 4Mood and Anxiety Disorders Program, Mount Sinai School of Medicine, New York, NY, USA

Abstract: There has been a rapid increase in the use of polypharmacy in psychiatry possibly due to the introduction of newer drugs, greater availability of these newer drugs, excessive confidence in clinical trial results, widespread prescribing of psychotropic medications by primary care, and pressure to augment with additional medications for unresolved side effects or greater efficacy. Even the new generation of medications may not hold significant advantages over older drugs. In fact, there may be additional safety risks with polypharmacy being so widespread. Washout, as a clinical tool, is rarely done in medication management today. Studies have shown that augmenting therapy with additional medications resulted in 9.1%–34.1% dropouts due to intolerance of the augmentation, whereas studies of medication washout demonstrated only 5.9%–7.8% intolerance to the washout procedure. These perils justify reconsideration of medication washout before deciding on augmentation. There are unwarranted fears and resistance in the medical community toward medication washout, especially at the moment a physician is trying to decide whether to washout or add more medications to the treatment regimen. However, medication washout provides unique benefits to the physician: it establishes a new baseline of the disorder, helps identify medication efficacy from their adverse effects, and provides clarity of diagnosis and potential reduction of drug treatments, drug interactions, and costs. It may also reduce overall adverse events, not to mention a potential to reduce liability. After washout, physicians may be able to select the appropriate polypharmacy more effectively and safely, if necessary. Washout, while not for every patient, may be an effective tool for physicians who need to decide on whether to add potentially risky polypharmacy for a given patient. The risks of washout may, in some cases, be lower and the benefits may be clearly helpful for diagnosis, understanding medication effects, the doctor/patient relationship, and safer use of polypharmacy if indicated.

Keywords: polypharmacy, medication washout, risk of polypharmacy

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