Common Facial swelling, Allergic reaction, Itching, Skin redness.

Expert advice for Gentop Lotion

Inform your doctor if you experience itching, skin rashes, swelling of face, lips, throat or difficulty in breathing.
Discontinue use and consult your doctor if you develop irritation, sensitization or a superinfection
Avoid getting this medication into your eyes, nose and mouth. If this happens wash your face thoroughly with water.
Tell your doctor if you are suffering from inflammation of the middle ear (otitis media), kidney or liver problem, open wound or damaged skin. 
Tell your doctor if you are pregnant, planning to become pregnant or are breastfeeding. 
It should not take if patient is allergic to gentamicin or any of its ingredients. 

Q. Is gentamicin topical a macrolide, steroid or a sulfa drug?
Gentamicin topical does not contain sulfa and is not a macrolide, or steroidal drug. It is a broad spectrum aminoglycoside

Q. Does gentamicin topical cause hearing loss or burn?
Yes gentamicin topical can cause hearing loss if used inappropriately. It can cause burning of eyes.