A cough lasting for 15 days needs a proper medical checkup. Taking more antibiotics, such as amoxicillin, or starting azithromycin on your own may not help and can cause unwanted effects. Drink warm fluids, avoid smoke and dust, and allow your throat to rest. Consult a doctor to find the cause of the persistent cough and receive suitable treatment.

Talk to your doctor, as your throat infection has not improved with Amoxil and zze. You may need a more potent antibiotic or a different treatment based on a proper examination.