I've had ECT & will admit that it did not help me.
I started meds, many combinations, in 1990 & did ECT in 2002. Then more med combinations & more ECT in 2014. Looking back I cannot say that it helped, but that is just me & every person is different. I've read on here that it has helped many people.
So I would just say do your research into this procedure, extensive research, (not just the first page of a google search) before you decide.
Best of luck!