Affiliation:
1. College of Pharmacy, Idaho State University, and Ambulatory Care Clinical Pharmacist, Boise Veterans Affairs Medical Center, Boise, ID
2. Boise Veterans Affairs Medical Center, and University of Washington, Seattle, WA
Abstract
Objective To report a possible case of serotonin syndrome associated with coadministration of tramadol hydrochloride and sertraline hydrochloride. Case Summary A 42-year-old woman developed atypical chest pain, sinus tachycardia, confusion, psychosis, sundowning, agitation, diaphoresis, and tremor. She was taking multiple medications, including tramadol and sertraline. The tramadol dosage had recently been increased, resulting in what was believed to be a serotonergic syndrome. Discussion Serotonin syndrome is a toxic hyperserotonergic state that develops soon after initiation or dosage increments of the offending agent. Patients may differ in their susceptibility to the development of serotonin syndrome. The (+) enantiomer of tramadol inhibits serotonin uptake. Tramadol is metabolized to an active metabolite, Ml, by the CYP2D6 enzyme. If this metabolite has less serotonergic activity than tramadol, inhibition of CYP2D6 by sertraline could have been a factor in the interaction. Conclusions Clinicians should be aware of the potential for serotonin syndrome with concomitant administration of sertraline and tramadol.
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81 articles.
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