I have been dealing with bad back and shoulder pain for years, it reached the point where I could no longer work out much less walk more than a few minutes or even stand up straight for that matter. Within 3 days my back pain is literally gone. I was actually back in the gym today and did chest with absolutely zero shoulder pain. I couldn't believe the pump I got after 10 months off and I'm still holding a decent upper body pump 4 hours later. I only did 30mcg subq today and can't wait to see what 10-12 weeks will do for me.