Welcome to health care magic
I can understand your situation. I appreciate your effort to seek online support.
Let me tell you that the weight gain you have mentioned is probably due to Mirtazapine
as it has a common side effect of increasing weight. However, additional factors could be there. I advise you to visit a psychiatrist
for readjustment of the dose or choosing a suitable alternative.
and lonazep are not known to cause such effects usually.
Hope it helps
Dr. Gourav Monga