Hello All, I have just gone onto taking exemestane (Aromasin) and after a wonderful stressless tamoxifen-free change over period, I'm now finding that one of the side-effects of Aromasin is really affecting me. Insomnia. I seem to sleep for about two hours then wake and toss and turn only to doze for maybe another couple of hours and then start shuffling again - this problem didn't affect me when I was taking tamoxifen…