I’ve been doing this off and on for about three years. It definitely works, and it is the only thing that has worked for me. The biggest thing is not to give up in the beginning.
When you start, you can do 5 rounds of 100 compressions and nothing will happen. But suddenly, something kind of starts to happen. Then nothing. Then kind of… until it eventually reaches the point where something is definitely happening.
This is only for the first time, once you’ve gotten it to work, you don’t have to go through all of that again (at least I haven’t).
I definitely recommend it!
(FWIW, I’ve had blood work done the day after doing this twice- renal function normal).