The most commonly reported side effects of fosfomycin include diarrhoea, off label use, and nausea, based on 3,715 FDA adverse event reports from 2004 to 2025.
Percentages show how often each reaction appears relative to total reports for fosfomycin.
These are voluntary reports and do not establish that fosfomycin caused these reactions.
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Other drugs that appear in adverse event reports alongside fosfomycin. 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.
56.9% of fosfomycin adverse event reports involve female patients and 27.9% involve male patients. The largest age group is adult at 49%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking fosfomycin when the adverse event was reported.
Showing 15 of 306 indications
Fosfomycin is sold under brand names including Fosfomycin Tromethamine, Contepo.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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