Azepino[4,5-b]indole is a tricyclic chemical compound related to tryptamine and having various alkaloid derivatives. The analogue of azepino[4,5-b]indole with the azepine ring fully hydrogenated, noribogaminalog (1,2,3,4,5,6-hexahydroazepino<nowiki>[</nowiki>4,5-b<nowiki>]</nowiki>indole), is a parent compound of the iboga-type alkaloids such as ibogaine as well as of their simplified ibogalog analogues like ibogainalog.