Please do a search and contribute to an existing Topic on this med if you can.
I’m not convinced you’ll get a lot of responses to this Topic as it’s not a very popular medication especially with current site regulars as partly illustrated here Medication mention count in User Cards but I’ll leave it open as we haven’t got a lot of Topics dedicated to it
Amitriptyline is an extremely effective medication for MAV, it’s a shame you are considering moving off it but I can relate to the weight gain. Worse for me was the bowel slowness, ugh.
Good luck.