Promethazine codeine syrup Fundamentals Explained
Codeine and its salts are very well absorbed following both oral and parenteral administration. Codeine is about ⅔ as effective orally as parenterally. Codeine is metabolized mainly within the liver by enzymes from the endoplasmic reticulum, where it undergoes O-demethylation, N-demethylation, and partial conjugation with glucuronic acid.Antichol