Pathway	Inhibitors	Substrates
Cytochrome P450 2D6	Fluoxetine (Prozac)	Codeine
	Paroxetine (Paxil)	Metoprolol (Lopressor, Toprol XL)
	Sertraline (Zoloft)	Paroxetine
		Perphenazine (Trilafon)
		Sertraline
		Venlafaxine (Effexor)
Cytochrome P450 3A4	Cimetidine (Tagamet)	Cisapride (Propulsid)
	Clarithromycin (Biaxin)	Erythromycin
	Erythromycin
	Fluvoxamine (Luvox)
	Grapefruit juice
	Itraconazole (Sporanox)
	Ketoconazole (Nizoral)
	Lovastatin (Mevacor)
	Nefazodone (Serzone)