"Pharmacokinetic Interactions: Amitriptyline, Fluoxetine and Antituberculosis Drugs."

According to the authors' abstract of an article published in Therapie, "Polytherapy is often used in clinical practice. The drug associations may lead to pharmacokinetic and/or pharmacodynamic interactions, with clinical implications. The authors reported a quantified illustration of 2 types of interactions in a depressed patient: between antidepressants, amitriptyline and fluoxetine, between these antidepressants and antituberculosis. Firstly, when fluoxetine was added to amiptriptyline, it was observed, as expected, an increase of the tricyclic and its metabolite plasma levels, despite a decrease of its dosage. Secondly, when antituberculosis were added to the 2 antidepressants, it...

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