Hi cough is of two types Allergic/seasonal and infective if u are having persistant cough more than 2 or 3 weeks possibility of infection to be ruled out. take 1) antibiotic amoxyclav 625mg two times a day 2) syp grilinctus BM 1tea spoon 3 to 4 times a day 3) start with steam inhalation 4) avoid exposure to dust.avoid cold beverages,ice creams, very spice food 5) if cough is not comin down ,we have to investigate further