I had difficulty sleeping since off tx {3yrs.}, at which time i started taking glucaphage. My np checked my b-12 level and it was low. since taking b-12 shot monthly and supplements sleep is a non issue.
gulucaphage can cause b-12 defficiency in some people and i have complained about my legs tightening up at night and experiencing hand tremors. all symptoms gone after 1st b-12 injection. just wanted to let those of you on glucaphage know about a side-effect often overlooked.