respected sir, my younger brother born during 1963 suffered brian cyst during 2010 august and operated during feb, 2011.  Now he is taking daily wysoline.  His blood sugar level is normal in empty stomach morning.  afternoon he is taking this tablet but sugarlevel showing always 280 to 320 . Dr told this tablet should not be discontinued in his life period.  What is the remedy sir, please reply whether any substitute medicine is there.  i am worried. thanks   s. mohan   please mail to my email id. thanking you once again