Buy Wockhardt  Syrup. The recommended dose of Promethazin HCl Syrup is 25 mg. Each bottle contains 10 mg/5 ml codeine phosphate and 6.25 ml/5 ml of promethazine hydrochloride. Ingredients of cough syrup when mixed with flavoring ingredients make their transition to lean. when they are. Ingredients often including sugary soft drinks and candy