Tobradex is a combination of which two drugs?

• A. Tobramycin + Dexamethasone
• B. Tobramycin + Prednisolone
• C. Gentamicin + Dexamethasone
• D. Amikacin + Dexamethasone

Answer: (A)

Tobradex is an eye drop that combines an antibiotic with a corticosteroid to treat infections with inflammation. The antibiotic part is tobramycin, which stops bacterial growth by binding to the bacterial ribosome and inhibiting protein synthesis. The steroid part is dexamethasone, which lowers inflammation, redness, and swelling, helping symptoms improve while the infection is treated. Because this product is specifically formulated as tobramycin plus dexamethasone, that exact pairing is what Tobradex provides. Replacing the antibiotic with gentamicin or amikacin, or using a different steroid like prednisolone, would change the formulation and is not what Tobradex contains.