There are many types of coughs and each type is treated differently. Cough can be due to bacterial and viral infection. It can also be due to allergy. Whenever there are irritations in throat, our body respond by coughing. In case of bacterial infection, antibiotics are used. On case of viral cough, only cough suppressants are used. Anti-allergy along with cough suppressants are recommended in case of cough due to allergy. So, you should be properly diagnosed by the doctor for effective treatment.