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Seizure resulting from a venlafaxine overdose
C M White1, R A Gailey, G M Levin
1Drug Information Center, Hartford Hospital, CT 06102, USA.
Objective:
To report a case of venlafaxine overdose.
Case Summary:
A 40-year-old woman with major depression took an overdose of venlafaxine in an apparent suicide attempt. After the ingestion of 26 venlafaxine 50-mg tablets, the patient experienced a witnessed generalized seizure. She was admitted to the medical intensive care unit, venlafaxine was discontinued, and no further sequelae were seen.
Discussion:
To our knowledge, this is the first reported case of venlafaxine overdose that resulted in a generalized seizure. Based on nonoverdose pharmacokinetics and pharmacodynamics of venlafaxine and the potential risks of available interventions, no emergent therapy was instituted.
Conclusions:
The venlafaxine overdose in our patient resulted in a single episode of generalized seizure but elicited no further sequelae.