Tobramycin Dexamethasone (Ramtrex) 3mg/1mg per ml Ophthalmic Suspension is a combination eye drop used to treat bacterial eye infections and reduce inflammation. It contains 3mg of Tobramycin (an antibiotic) to fight infection and 1mg of Dexamethasone (a corticosteroid) to alleviate swelling and irritation. The 5ml bottle provides a convenient supply for effective treatment.