Azithromycin is usually not absolutely harmful when taken for 6 days in a row, provided that medical advice is followed. If azithromycin is taken privately, allergic reactions, liver function impairment, gastrointestinal abnormalities may occur. 1. Allergic reaction: Azithromycin belongs to the antibiotic class of drugs, mostly treating streptococcus, Chlamydia trachomatis infectious diseases. If the patient has not taken azithromycin, or if the dose is large, it may cause allergic reaction, rash, itching, edema and so on. 2. Liver function damage: when patients take azithromycin privately, or follow the doctor’s instructions for medication, there is also a certain chance of liver function damage. Because the liver is the main way to metabolize azithromycin, severe cases may lead to liver function abnormalities, jaundice, liver failure and so on. 3. Gastrointestinal abnormalities: some patients may experience gastrointestinal symptoms such as nausea, vomiting, diarrhea, flatulence, abdominal pain and other gastrointestinal discomforts to varying degrees after continuous use of the drug. Regarding the possible hazards of taking Azithromycin for six days in a row, those who have relevant doubts are advised to consult a professional doctor. In your daily life, you need to follow the medication strictly and inform your doctor in time if you experience any discomfort.