A patient on sertraline is started on linezolid and develops agitation, hyperthermia, diarrhea and inducible clonus. What is the best treatment in addition to stopping the drugs?

Answer and explanation

Correct answer: C. Cyproheptadine

  1. Step 1: Linezolid is a weak MAO inhibitor, so combining it with an SSRI can cause serotonin syndrome. Step 2. Cyproheptadine is a serotonin antagonist used when benzodiazepines are not enough. Answer: cyproheptadine. Why not the others: dantrolene and bromocriptine treat malignant hyperthermia and neuroleptic malignant syndrome, and haloperidol can worsen the condition.

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