plasma levels of doxepin and its metabolite desmethyldoxepin were determined in 7 depressed patients treated with doxepin hydrochloride in 3 divided doses at 1000 , 1600 , and 2200 hours ( t.i.d . ) , and repeated after changing the dosage schedule to a single daily bedtime ( h.s . ) dose at 2200 hours .
C0013085
doxepin
C0700535
doxepin hydrochloride