Best auto for pain killer?

hey guys just wondering you opinions on the best autoflowering plant for pain, particularily back pain. i was thinking afghan kush but im not sure yet, any opinions would be great thanks.

I don't know autoflowers for squat, but I know back pain and you are going to want a couchlock type of stuff.

Or if you want to do really decent stuff that works for that type of pain and, mind you and you don't get couch lock, get some strawberry cough.

afghan..kush..ryder

All that needs to be said. You will be so numb that you will forget you even had a back.