Carbamide peroxide 6.5% non USP. No. 1 pharmacist recommended brand! - Pharmacy Times. OTC Master's Circle, 2010 Achievement Award. Safe, gentle, non-irritating. Easily cleanses ear with microfoam action. When used as directed, Debrox cleanses the ear with microfoam action providing a safe, non-irritating method of softening and removing earwax. Note: oversize package for ease in reading label information.