Randi challenge accepts things such as magnet rings and alternative medicines. For example, they did a homeopathy challenge, which does not claim to be paranormal. I think if the challenge were "do i feel better when I take CF" they might not accept that. But if the challenge is "my bone structure measurably changes by big amount when i take CF/GP" then that is a Randi challenge for sure.

Well, they should measure a people now starting taking gorgeouspil and measure again him/her each month through accurate instruments. If some of you has just started with gogeouspil/chi flush, you could apply to randi's challange.