Aminoglycoside antibiotic / corticosteroid combinations are used to treat bacterial infections, such as certain eye and skin infections. They can also treat inflammation caused by the infection. These medications work by combining an antibiotic to kill bacteria and a corticosteroid to reduce inflammation. They come in different forms depending on the infection they treat. For example, aminoglycoside antibiotic / corticosteroid combinations that treat eye infections come as eye drops and eye ointments. Examples include tobramycin/dexamethasone (Tobradex, Tobradex ST) and Zylet (loteprednol/tobramycin). You can choose the form that best fits your needs.