I have had three jaw surgeries and wear an appliance at night since I no longer have a natural resting place. I have been taking amitriptyline since 1997. It works . I can sleep at night. The problem is extreme dry mouth and has gotten worse with age. I'm about 50 lbs. overweight because I'm always putting food or drink in my mouth for relief. Doctor said I will have other health issues if I don't lose weight. Help. What else can I take?