Thioridazine for schizophrenia.

Thioridazine is a piperidine phenothiazine used for the treatment of people with schizophrenia. It has often been considered the drug of choice in the elderly because of reputed lower levels of extrapyramidal adverse events. It may, however, be more likely to cause cognitive adverse events, such as delirium or worsening of memory, and, on rare occasions, thioridazine has caused pigmentary retinopathy.