I was an original tester for Prime thru Jacob, and was sent 4 bottles of Prime to give honest feedback. I didn't see a thing. And I was hardcore strict on my dosing/macros/workouts back then.
I will say, I loved Anabolic Pump tho. As well as Powerfull I believe it was?
I liked the prime/powerful / AP stack, but, like with anything, I was training hard, and diet on point, and in calorie surplus so how the hell does ever really know if your muscle and strength gains aren not just from that. It is like these products you have to be natty, at maintenence, and keep all nutition and training compeltley the same and controlled and then introducte a product to know if its doing anything IDK.
I stopped using all of the natty stacks and stuff because I was never in the aforementioned situation long enough to run multiple products, I was always in an off season (gaining with cal surplus) or dieting for shows, never ran a long extgended maintenece phase to see.
Maybe Ill try something when I get back from iraqistan land