In Phase 3 clinical trials, a total of 564 patients were treated with ciprofloxacin hydrochloride and hydrocortisone otic suspension. Adverse events with at least remote relationship to treatment included headache (1.2%) and pruritus (0.4%). The following treatment-related adverse events were each reported in a single patient: migraine, hypesthesia, paresthesia, fungal dermatitis, cough, rash, urticaria, and alopecia. The following reactions have been identified during post-approval use of ciprofloxacin hydrochloride and hydrocortisone otic suspension in clinical practice. Because they are reported voluntarily from a population of unknown size, estimates of frequency cannot be made.