NCIt definition : The hydrochloride salt form of thiothixene, a thioxanthene derivative and a dopamine
antagonist with antipsychotic property. Thiothixene blocks postsynaptic dopamine receptors
in the mesolimbic system and medullary chemoreceptor trigger zone, thereby decreasing
dopamine activity leading to decreased stimulation of the vomiting center and psychotic
effects, such as hallucinations and delusions. In addition, this agent blocks the
D2 somatodendritic autoreceptor, thereby increasing dopamine turnover. Thiothixene
possesses weak affinity for the histamine H1 and alpha-adrenergic receptors.;