Neomycin is an antibiotic that belongs to the aminoglycoside class. It is primarily used to treat bacterial infections, particularly those caused by gram-negative bacteria. Neomycin works by inhibiting protein synthesis in bacteria, effectively stopping their growth and reproduction. It is often used topically in creams and ointments for skin infections or as an oral medication to reduce bacteria in the intestines before surgery. Due to its potential side effects, including kidney damage and hearing loss, neomycin is usually prescribed with caution. It is not recommended for long-term use or in patients with pre-existing kidney issues. Always consult a healthcare professional before using medications containing neomycin.