Hi, Thanks for using Healthcaremagic, You have been diagnosed with Pneumonia which is bacterial infection of lungs. It is treated with appropriate antibiotics in your case it is Z Pack. Pneumonia is accompanied by cough and production of sputum or with dry cough if there is dry cough the cough suppressant like codeine and promethazine are given. There is no problem in taking treatment as it relieves your cough. If productive cough is there usually cough expectorants are preferred. Your doctor knows best please have faith in you treating Physician and you will be all right in few days. Hope this information helps. Take care Good Luck. Dr. Akhilesh Dubey M.D