Many patients with a variety of medical conditions take illicit substances concomitantly with clinical drugs. This concomitant usage can lead to life-threatening adverse events. Despite the evidence that these adverse events can be caused by pharmacokinetic interactions, the underlying mechanisms are poorly understood. Investigation of mechanisms involved in dysregulation of endobiotic homeostasis during the concomitant usage of illicit substances with clinical drugs could provide novel insights into pharmacokinetic mechanisms of adverse interactions between illicit substances and clinical drugs.
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