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. 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. In addition to its use in treating infections, Neomycin can also be found in some over-the-counter products, such as triple antibiotic ointments, which combine it with other antibiotics like bacitracin and polymyxin B. However, it is important to use Neomycin cautiously, as it can cause side effects, including allergic reactions and kidney damage, especially when used in high doses or for extended periods.