Isn't GBL more powerful than GHB ? , I'm talking about the shit that they used to sell @ nutrition stores , renewtrient ,revivarant ,blue nitro................... ...

GBL = the shit that they used to sell @ nutrition stores Che.
Look at the size of the bottle caps on those bottles. They are about the size of the measuring cup you posted. Now grab a 16 oz bottled water or of your favorite soda. A dose for each is a "capful".....you tell me which one is more powerful?
I've used the yellow one on the left in that pic, and it was pretty good.....,but it is not GHB good.
BTW, my old friend that used to be the big juice/pot/X dealer got his hands on the shit from Europe one time. It comes in a pink powder, and you just take one of those little mini mini scoops like you get with some powdered vitamins....that shit was incredible! We just took one scoop, cuz we were afraid of it and it wasn't in English, but it was super chillaxing and then euphoric when we started pounding the booze.