The most commonly reported side effects of thonzonium include optic neuritis, off label use, and leukopenia, based on 16 FDA adverse event reports from 2004 to 2025.
Percentages show how often each reaction appears relative to total reports for thonzonium.
These are voluntary reports and do not establish that thonzonium caused these reactions.
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Other drugs that appear in adverse event reports alongside thonzonium. 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.
37.5% of thonzonium adverse event reports involve female patients and 37.5% 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 thonzonium when the adverse event was reported.
Thonzonium is sold under the brand name Coly-mycin S.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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