I don't outwardly notice a difference between before a can of full throttle, and after (aside from feeling a bit more awake, usually)... but if I drink two cans, oh boy do I feel wierd. I don't know how to discribe it, but just... wierd. There's an optimal time for me to consume the first can, just before I start getting tired. If I'm already drowsy and want to go to sleep, Full Throttle won't help.
That said, that shit is NOT equal to pop/soda, whatever you call it. It's loaded with stimulants and other chemicals your body would be far better off with out. If you drink that shit like water, you're not doing your body any good, that's for sure. The only reason I drink them is for long drives and I need a little extra kick in the ass to stay 110% alert.
Soda/pop is essentially water mixed with sugar and artifical flavours, then carbonized. Flavoured fizzy water if you will. If you have to struggle to pronounce the ingredients, it ain't good for you, no matter what the label says. Usually pepsi, coke, mountain dew, ect, are all easy to pronounce.