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You should have tablet Azithromycin 500 mg once daily, along with some antacids like Pantoprazole 40 mg before breakfast once daily for five days. Also, have Betadine gargles four times a day.
For cough, you can have syrup Alex (Phenylephrine Hydrochloride and Chlorpheniramine Maleate) two teaspoons whenever needed up to three times a day and tablet Allegra (Fexofenadine Hydrochloride) 120 mg once a day for three to four days for post nasal drip. Avoid cold food items.
I hope this helps.