I emailed my guy and he said he has been selling it for 1 year now and people are pleased with the results. He wouldn't recommend to me if it was higher/lesser/equal quality to the Sust250 from Nile Organan but who knows. Theres hardly ANY info out there about Tigerblood products but im guessing IF it was really bad gear more people would be pissed off and post that it was crap hu! They do go to extreme lengths to make sure they gear cant be faked though, holograms, printed "tigerblood" directly on the bottle and on the caps. and their website was not cheap to product either. Tigerblood.com, they dont sell directly there so im not posting a source.