A few reasons, I'm not sure how much they are helping any more. I have not told the GP surgery (They did try to stop them once before... replacing them with seroquel.. I became allergic to the seroquel) I'm taking 5mg at night at the moment. I've been sleeping ok and my mood has actually been better (not sure why..) I was taking 3 times that amount. But sometimes I took less (for anyone who doesn't know, I've been allergic to all the other meds I've tried (psych meds) except for benzos)