ChEBI: Doxepin is a dibenzooxepine that is 6,11-dihydrodibenzo[b,e]oxepine substituted by a 3-(dimethylamino)propylidene group at position 11. It is used as an antidepressant drug. It has a role as an antidepressant. It is a dibenzooxepine and a tertiary amino compound.