* Bupropion slows the metabolism of venlafaxine by CYP2D6.<ref> Kennedy et al, [http://www.ncbi.nlm.nih.gov/pubmed/11926715?ordinalpos=11&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum Combining bupropion SR with venlafaxine, paroxetine, or fluoxetine: a preliminary report on pharmacokinetic, therapeutic, and sexual dysfunction effects.]. J Clin Psychiatry 2002 March;63(3):181-6.</ref>

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