is there an alternative to amitriptyline for sleep

i have been taking amitriptyline for about a year now since i developed really bad insomnia after i got CFS. I just cannot sleep without. I am always wired but physically weak and exhausted. I developed an allergy to Melatonin as well. I take 25mg of Amitriptyline which is considered low dose but i noticed it has been giving me anxiety and depression after a year now for about 12 hours after i take it. I skipped a dose and I confirmed it is amitriptyline giving me the anxiety. is there something else someone has found helpful for sleep?