Update:
Well my gbl arrived today and i bought a bottle of fanta zero (sugar free) to wash it down with.
So anyway i poured about half a glass of fanta in a cup and very carefully, i added 1.5 of the gbl into the drink. I was dubious about the taste at first but after downing it in one, it kinda tasted like fanta to me.
I heard it takes about 15 to 30 mins before gbl kicks in, so i thought i'd watch some tv while im waiting.
Then about 10 min in i felt dizzy, so i thought it would be a good idea to remain sitting down.
The next thing i can remember is waking up from a 30 min nap, wondering why a mere 1.5 ml would knock me out so quick.
Maybe i had high expectations from taking gbl, but i got no buzz from it at all. I knew it had sedative qualities but i was hoping for something more. On the positive side, at least i have found something more effective than nytol now.