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FDA Drug Safety Podcast for Healthcare Professionals: Updated information about the drug interaction between linezolid (Zyvox) and serotonergic psychiatric medications

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Narrator: Welcome to the FDA Drug Safety Podcast for Healthcare Professionals from the Division of Drug Information. Today's topic: Updated information about the drug interaction between linezolid (Zyvox) and serotonergic psychiatric medications. This update is in follow-up to the FDA Drug Safety Communication posted on July 26, 2011 entitled: Serious CNS reactions possible when linezolid is given to patients taking certain psychiatric medications.

Lesley Navin, a Consumer Safety Officer in the Division will provide you with additional information about this Communication.  

Guest speaker: On October 20, 2011, the Food and Drug Administration issued a Drug Safety Communication updating the public on the potential drug interaction between linezolid and serotonergic psychiatric medications.   

FDA is providing additional information about the reports of serotonin syndrome. Not all serotonergic psychiatric drugs have an equal capacity to cause serotonin syndrome with linezolid. Most cases from the FDA's Adverse Event Reporting System of serotonin syndrome with linezolid occurred in patients taking specific serotonergic psychiatric drugs, namely a selective serotonin reuptake inhibitor or a serotonin norepinephrine reuptake inhibitor. It is unclear at this time whether linezolid administration in patients receiving other psychiatric drugs with lesser degrees of serotonergic activity poses a comparable risk.

FDA will update the public when new information is available.  

Narrator: Thank you for listening. The FDA is committed to keeping healthcare professionals informed of the latest safety information. Please read the Drug Safety Communication for a list of the serotonergic psychiatric medications that can interact with linezolid. A link to this communication can be found at www.fda.gov/DrugSafetyCommunications. If you have drug questions, you can reach us at druginfo@fda.hhs.gov.

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