with gaba, from what I remember and I probably won't explain it properly so feel free to correct, there is no crossing of the blood/brain. so taking it orally won't get to the brain where it will do what you think it will. Also, taking a high dose of it, after about 5 min you will feel like you can't breathe. don't panic, this will quickly pass in about a minute. Breathing is hard lol, scared the shit outta me the first time. I haven't read anything lately but a few years ago when I looked into it I remember it not being as good as it was supposed to be, I ended up throwing out my stash of it. sleepy, yeah, fat loss, maybe a tiny bit, but other than that I'm not sure those hormonal claims can be justified.