I am 38 and normally very healthy, rarely sick. my doctor has prescribed me as a temporary fix until we discover if there is an underlying problem, 1 x temtabs to assist with a uninterrupted sleep and 1 x duramine 40mg first thing in the morning to assist with alertness. I have been struggling to stay asleep when go to bed, and to stay awake during the day. I have needed several hours of sleep during the day which is very unusual for myself.As a general feeling in myself I am happy, not a lot of stress actually less then usual, life is pretty good for me, apart from this overwhelming tiredness. This situation has impacted my work and being a single parent I need to work to earn, so he has prescribed me this temporarily. I have now been scheduled for another unrelated operation in 11 days is this going to be a problem. do I need to stop taking these. The medication is helping with me to get through work that I need to do until we can discover answers with further testings.