I have been on Amitrityline 20mg daily which I take approx. 7pm each night since 24th March. During the last two weeks I have been very very breathless and fast heat rate also a dry cough and dry mouth. It was so bad during the early hours of this morning I was panicky and anxious as I found breathing difficult and racing pulse. Have phone the hospital Arthritis helpline and left them a message. Anybody else had similar experience on this medication ??