sir my son age20 years wt 80 kg,4 years before fell down back side with fainting after urination at night ,second time one month before in morning while brushing this time he was in the hostel[doing B.tech] taken to local hospital ecg,lft,eeg,kft/sodium /potassium all the test were normaal doctor started valprol cr 500 mg 2 times daily but he was not able to study after this so he him self reduced to 250 daily 2 dosesnow he is comparatively comfortable should ihe stop medicines