<unk> , sold under the brand name Insidon among others, is an anxiolytic and antidepressant that is used throughout Europe. Despite chemically being a tricyclic dibenzazepine (iminostilbene) derivative similar to imipramine,<unk>  is not a monoamine reuptake inhibitor like most other tricyclic antidepressants, and instead, uniquely among antidepressants, acts primarily as a sigma receptor agonist. It was developed by Schindler and Blattner in 1961.
Opipramol
Stiripentol
Fenproporex
Mitapivat
Florbetapir 
Avacopan
Vigabatrin
Piritramide