Ear drops are a form of medicine used to treat or prevent ear infections, especially infections of the outer ear and ear canal. Bacterial infections are sometimes treated with antibiotics. Examples are: Ciprodex ear drops Gentisone HC ear drops Ciproxin HC ear drops Sofradex ear drops (containing Framycetin Sulphate, Gramicidin, Dexamethasone/sodium metasulphobenzoate, Phenylethanol Kenacomb ear drops, containing triamcinolone acetonide, neomycin and gramicidin and nystatin Over the counter ear drops are also available, including spirit drops, which dries out the ear, and drops such as Aqua Ear containing a mixture of substances such as alcohol and acetic acid, to dry the ear and make it difficult for microbes to grow.