The most commonly reported side effects of thioridazine include toxicity to various agents, weight increased, and obsessive-compulsive disorder, based on 1,401 FDA adverse event reports from 2004 to 2025. 16.8% of reports found the drug to be ineffective.
Percentages show how often each reaction appears relative to total reports for thioridazine.
These are voluntary reports and do not establish that thioridazine caused these reactions.
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Other drugs that appear in adverse event reports alongside thioridazine. Drugs flagged as a suspected cause appear in the first column. Drugs taken at the same time but not suspected appear in the second.
Also suspected
Taken alongside
Co-occurrence in adverse event reports does not establish a drug interaction. Patients often take multiple medications, and these lists reflect prescribing patterns rather than causal relationships. Consult a healthcare provider about potential drug interactions.
45.7% of thioridazine adverse event reports involve female patients and 44.2% involve male patients. The largest age group is adult at 71%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking thioridazine when the adverse event was reported.
Showing 15 of 115 indications
Thioridazine is sold under brand names including Mellaril-s, Mellaril.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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