Hi Pouncer,
I don't really have any advice other than what has been already said but I am confident you will regain your strength. I have had many failed attempts at sobriety, it doesn't get any easier that is for sure but I think you were headed in the right direction.
I hope you get your medicine figured out if that is what is helping you, I try and keep anything and everything that helps me in my sobriety as close and easily accessible as possible.