I assume it's an sglt2 drug like empagliflozin. I lost weight when I went on jardience, but to be fair, I was taking other steps, such as low-carb eating at the time. So it's impossible to day it definitely lead to weight loss, but I feel pretty strongly that it helped.
If you are going from gliclazide to this, it should make a noticable difference, as gliclazide promotes weight gain, and SGLT2 inhibitors promote weight loss, so the swing from one end to the other should help.