InChI=1S/C19H21N/c1-20-14-6-11-19-17-9-4-2-7-15(17)12-13-16-8-3-5-10-18(16)19/h2-5,7-11,20H,6,12-14H2,1H3   Y Key:PHVGLTMQBUFIQQ-UHFFFAOYSA-N   Y   Y   (what is this?)    (verify) Nortriptyline is a second-generation tricyclic antidepressant (TCA) marketed as the hydrochloride salt under the trade names Sensoval , Aventyl , Pamelor , Norpress , Allegron , Noritren and Nortrilen . It is used in the treatment of