The most commonly reported side effects of benzyl include toxicity to various agents, diarrhoea, and fatigue, based on 302 FDA adverse event reports from 2004 to 2025. 8.6% of reports found the drug to be ineffective.
Percentages show how often each reaction appears relative to total reports for benzyl.
These are voluntary reports and do not establish that benzyl caused these reactions.
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Other drugs that appear in adverse event reports alongside benzyl. 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.
55.6% of benzyl adverse event reports involve female patients and 28.8% involve male patients. The largest age group is adult at 41%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking benzyl when the adverse event was reported.
Showing 15 of 38 indications
Benzyl is sold under brand names including Ulesfia, Benzyl Benzoate.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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