Inhibitors or substrates of CYP2D6 (i.e., quinidine, selective serotonin reuptake inhibitors [SSRIs]) may increase the plasma concentration of doxepin when administered concomitantly.
<quinidine, mechanism, doxepin>, <selective serotonin reuptake inhibitors, mechanism, doxepin>, <SSRIs, mechanism, doxepin>