For an ear canal infection (otitis externa), the most effective treatment is prescription ear drops. These typically contain a generic antibiotic to fight the bacteria, such as ciprofloxacin or neomycin/polymyxin B, often combined with a steroid like hydrocortisone or dexamethasone to quickly relieve swelling and itching. It is very important to have a doctor examine your ear first to ensure your eardrum is intact before starting any drops. To help it heal, keep your ear completely dry when showering and avoid using cotton swabs. Do not worry?this is a very common, highly treatable condition that usually clears up within a few days of starting treatment.