I am taking Amitriptyline and Zapain for pain not related to my Parkinsons. Since starting these tablets I have stopped producing saliva. I did pose a similar question a short while ago and have tried various suggestions, but to no effect. I tried reducing meds but pain returned. I also have a bad taste in my mouth, which seems to transfer itself to everything I eat. My mouth is so dry it is very uncomfortable. GP has given me a spray and tablets, but these do not help. I am looking for a solution which does not involve more meds and would be grateful for any suggestions.