The most commonly reported side effects of timolol include treatment failure, eye irritation, and eye pain, based on 38,692 FDA adverse event reports from 2004 to 2025. 6.3% of reports found the drug to be ineffective.
Percentages show how often each reaction appears relative to total reports for timolol.
These are voluntary reports and do not establish that timolol caused these reactions.
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Other drugs that appear in adverse event reports alongside timolol. 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.
55.7% of timolol adverse event reports involve female patients and 38.2% involve male patients. The largest age group is elderly at 73%. These figures reflect who reports side effects, not underlying risk.
Sex
Age group
Conditions and purposes for which patients were taking timolol when the adverse event was reported.
Showing 15 of 425 indications
Timolol is sold under brand names including Betimol, Combigan.
An upward trend reflects increased FAERS reporting overall, not necessarily increased risk.
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