<unk>  (Sordinol), also known as<unk> , is a typical antipsychotic drug of the thioxanthene class. It was introduced by Lundbeck in 1961.<unk>  is a racemic mixture of cis and trans isomers. Zuclopenthixol, the pure cis isomer, was later introduced by Lundbeck in 1962, and has been much more widely used. Both drugs are equally effective as antipsychotics and have similar adverse effect profiles, but<unk>  is half as active on a milligram-to-milligram basis and appears to produce more sedation in comparison.<unk>  is not approved for use in the United States.
Clopenthixol
Ephedrine
Guaifenesin
Nomifensine
Cimetropium bromide
Diisopromine
Methoxyphedrine
Amfepramone