Thanks for your reply Borek, I thought as much, but is it dangerous for human consumption or just ineffective? I have a few clients on it, and I would like to give them the best advice, I.e. whether dangerous or simply BS. Also are you aware of the D-Ribose L-Cystine issue also, or is that BS also. So many things out there at the moment, hate seeing people getting ripped. I guess I'm putting it out there to you guys, as I am not a chem or biochem wiz....wish I had have known about this forum when I was studying the chem and biochem units at uni...would have helped immensely...I have probably posted this question in the wrong forum....maybe better in the random questions section Thanks for your time anyway.