KittyLady,
I am so sorry that you are suffering.
If I understand correctly, your MD is offering amitriptyline to help w the break through pain. Is that right?
Amyitriptyline and similar drugs are antidepressants but when used in smaller doses w a pain med they potentiate (make stronger) the pain med.
I took Tegretol for TN for years and felt it every day until a wise MS Fellow added Noretriptyline in a low dose. I love that guy! I rarely have pain now.
I hope that you can try one of these old, cheap drugs.
ANN