TobraDex(tobramycin an dexamethasone ophthalmic suspension USP) is a popular prescription medication marketed in the United States by Alcon Labs. The active ingredients are tobramycin 0.3% (an antibiotic) and dexamethasone 0.1% (a corticosteroid). TobraDex is a trademark of Alcon Labs. It is prescribed for a wide spectrum of bacterial eye infections. Tobradex can also be used to clear or contract stye that are also found in the eye. Tobradex is sometimes prescribed for the treatment of pink eye. NDC 0065-0647-08.