Hospital Clinic Barcelona Cerumenolytic Ear Drops Study
Also known as: Chlorobutanol, Potassium Carbonate, and Irrigation in Cerumen Removal, Randomized, Placebo-Controlled Evaluation of Chlorobutanol, Potassium Carbonate, and Irrigation in Cerumen Removal, Otocerum, Taponoto, drops intilation Otocerum, drops intilation Taponoto, NCT00765635, CLO2008/4503
Institution-led study
Academic randomized Phase 4 comparison of ceruminolytic ear-drop products before ear irrigation in adults with complete cerumen occlusion. Otocerum contains chlorobutanol/phenol/turpentine essence/ethyl alcohol, Taponoto contains potassium carbonate/ethyl alcohol/glycerol/thymol, and saline served as control; the compared drops are study arms rather than separate hearing-loss pipeline programs.
Verified as a completed Hospital Clinic of Barcelona cerumenolytic ear-drop comparator study with registry and publication evidence. Product manufacturers appear as named products in the study context, but the record should remain a study-level cerumen-removal entry rather than a live commercial pipeline program.