Hi, I bought a bottle of the T2. I take other medication that makes me quite sleepy throughout the day. I would take the ECA stack (ephidrine, caffeine, and aspirin) and that would keep me quite awake and jittery, but I was worried about getting addicted to it so I stopped. I had the t2 stuff for a while, but hadn't used it much. Today I decided I wanted to just use up the bottle and see what happens. I've noticed I'm more awake from taking the minimum amounts, and it's a lot less jittery than the ECA stack. That's my experience so far. I'm going to take it some more and see what kind of results I get as far as fat loss. I only hope it's good for metabolism and insulin, though I haven't done research on it.