Also Known As: Thioridazine, Melleril, Novoridazine, Thioril)

Thioridazine (Melleril, Novoridazine, Thioril) is a piperidine typical (but see next paragraph, below) antipsychotic drug belonging to the phenothiazine drug group and was previously widely used in the treatment of schizophrenia and psychosis. Due to concerns about cardiotoxicity and retinopathy at high doses this drug is not commonly prescribed, reserved for patients who have failed to respond to, or have contraindications for, more widely used antipsychotics. A serious side effect is the potentially fatal neuroleptic malignant syndrome. It exerts its actions through a central adrenergic-blocking, a dopamine-blocking, and minor anticholinergic activity.

In older references, it is sometimes described as atypical, but more recently it is usually described as typical, with the term "atypical" usually reserved for agents showing D4 selectivity or serotonin antagonism.


Previous additional indications were agitated depression, tension and anxiety linked to alcohol withdrawal and dysphoria of epileptic patients. It was even indicated in Europe for the treatment of psychosis in children and adolescents as Melleretten (10 mg to 60 mg daily).

It was also given off-label for the treatment of insomnia and for alleviation of opiate withdrawal.[citation needed]

Thioridazine is known to kill multidrug-resistant Mycobacterium tuberculosis and MRSA at clinical concentrations.[3][4]

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