I got no effects until I used 4.5g and even then, I just got sleeply. This is one of those things that could effect different people in varying degrees of intensity.
Manwhore, I think butanediol (what I think you were refering to) was a lot better at half the dose. Too bad pucks kept using it as a date rape drug, now it's gone. This thread maybe should be in the supp's form.