For the last week or so I have been having trouble sleeping and when I do fall asleep it is a very light sleep. I find myself tossing an turning most of the night. My right arm also feels like it has a charlie horse in it most of the time. I take 1000mg Metformin 2 times a day. Is this anything I should be concerned about? I have also had a head ache for going on 12 days.
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