Gentamicin for enteritis is usually taken between 3 to 5 days, the exact treatment time is related to the severity of the condition and the patient’s personal constitution. Gentamicin is a kind of aminoglycoside antibiotic, clinically can relieve the symptoms of infection induced by sensitive bacteria, used to treat bacterial infections, especially gram-negative bacterial infections, but also can be used to treat bacterial dysentery, chronic gastritis, and bacterial intestinal infections, in the medication as well as the body’s self-repair of the joint effect, the course of treatment will take about 3 to 5 days. The pharmacological effect of gentamicin is to be able to bind to the 30S subunit of the bacterial ribosome, thus blocking cellular protein synthesis, and then play an antibacterial role. Common adverse reactions to gentamicin include fever, rash, leg cramps, and generalized spasms, etc. Gentamicin is contraindicated in people who are allergic to gentamicin or aminoglycoside antibiotics. In addition, the use of gentamicin carries certain risks, and patients need to be guided by a specialist.