It is too early to see improvement, as these medications typically take 2 to 3 days to show results. However, please double-check your Azithromycin dosage with your pharmacist or doctor, as it is standardly prescribed once daily, not twice. Remember, Azithromycin is an antibiotic and will not cure viral infections, which commonly cause dry coughs. Benzonatate (Benz Pearls) helps suppress coughs but needs time to work. Do not alter your treatment without medical supervision. If you develop shortness of breath, high fever, or chest pain, seek immediate medical attention.