how to make quality wockhardt Best lean cough syrup. Wockhardt cough syrup is a combination medication that contains promethazine and codeine. Promethazine is an antihistamine that helps to relieve symptoms such as runny nose, sneezing, and itching. Codeine is an opioid cough suppressant that helps to reduce the urge to cough. Wockhardt cough syrup should […]