I've just finished up my first week of glucophage. Today was my first day of 1500mg. I've upped it every couple of days working up to today's dose. I have been so tired this week though. It's like all my energy has been completely drained and all I want to do is sleep. Please tell me this is normal. Last time I tried to take glucophage I was in college and working retail and quit because of the side effects. Now I'm a teacher and am home for the summer and figured I would try it again. This time I've had none of those effects, just tired. Will this go away? Thanks!