Serentil® (mesoridazine besylate) is a neuroleptic drug that is used in the treatment of schizophrenia, organic brain disorders, psychoneuroses, and alcoholism. It is the besylate salt of a metabolite of thioridazine. It exerts its actions through a central adrenergic-blocking, a dopamine-blocking, a serotonin-blocking, and a weak anticholinergic action. It also exerts part of its actions through depression of hypothalamic centers, like other phenothiazines.
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Antipsychotics :: Drugs and Medications

Mesoridazine - Internet Mental Health page discusses pharmacology, indications and contraindications, precautions, dosage, and other topics. From a Canadian monograph.
Mesoridazine - Familydoctor.org - Information for patients in English and Spanish.