Azithromycin belongs to the macrolide group of antibiotics, and its side effects are largely the same as those of other antibiotics. Common ones are digestive disorders, such as indigestion, flatulence, gastritis, and oral candidiasis. Neurological disorders such as headaches and drowsiness. In addition to this, there can be allergic reactions, such as localized itching and cramping, and others such as abnormal taste. Other patients, especially the elderly, can also have diseases of the cardiovascular system, such as arrhythmia, ventricular tachycardia, atrial and ventricular premature. Diseases of the urinary system, such as interstitial nephritis and acute renal failure. The hematopoietic system may also present with thrombocytopenia. Diseases of the hepatobiliary system, such as hepatitis and cholestatic jaundice, have also been reported.