There is some backing around these boards; Vaughn and Dr. Houser both like Humanofort.
I actually just got two bottles, too. I want to give it a shot. However, the typical 100mg dose in products won't do much. Dr. Houser suggests that minimal effective dosing is 300mg (if not more).
Dr. Houser is running a little test at the moment, so if you stay tuned to his forum section you may get some good information.