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Psychiatry Res. 1996 Jan 31;59(3):189-96.

Paroxetine shifts imipramine metabolism.

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1
Psychiatry Service, Long Beach Veterans Affairs Medical Center, CA 90822, USA.

Abstract

The combination of selective serotonin reuptake inhibitors with tricyclic antidepressants has proven useful in treatment-resistant depression but has the potential for adverse drug-drug interactions. In the present study, the metabolism of a single dose of imipramine was studied before and after treatment with paroxetine. Paroxetine induced significant elevations of approximately 50% in half-life, area under the curve, and Cmax of imipramine and decreased clearance twofold. The effects on desipramine pharmacokinetics were even more pronounced. These findings indicate a significant interaction of paroxetine with the CYP2D6 isoenzyme.

PMID:
8930024
[Indexed for MEDLINE]
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