an hplc method for determination of mebeverine hydrochloride (mh) in the presence of its degradation products was developed. the degradation of mh was studied under hydrolysis, oxidative and photolysis stress conditions. under alkaline, acidic and oxidative conditions, degradation of mh was observed. the separation was performed using a symmetry c 18 column and a mixture of 50 mm kh 2 po 4 , ac...