My father(age 55) is suffering from diabetic pain in legs and sometimes he can't sleep at night. He takes insulin injections to control
sugar levels. He has a history of heart problem too and one time had been in hospital for some heart related problem. He is taking some heart medications too. Now he took Mecobalamin 500 injections for 3 days and now feeling relief from pain. Can he continue to take Mecobalamin 500 tabs daily? I would also want to know that can he take Surbex Z tabs instead?