The most commonly reported side effects of fidaxomicin include clostridium difficile infection, diarrhoea, and disease recurrence, based on 2,302 FDA adverse event reports from 2011 to 2025. 17.1% of reports found the drug to be ineffective.
Percentages show how often each reaction appears relative to total reports for fidaxomicin.
These are voluntary reports and do not establish that fidaxomicin caused these reactions.
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Other drugs that appear in adverse event reports alongside fidaxomicin. 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.
53.5% of fidaxomicin adverse event reports involve female patients and 32.8% involve male patients. The largest age group is elderly at 53%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking fidaxomicin when the adverse event was reported.
Showing 15 of 80 indications
Fidaxomicin is sold under the brand name Fidaxomicin.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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