The guy at my local place gave me something new to try. He said he's not a fan of Jack3d at all because it's "an empty supplement" that gives you energy for 30 minutes and is gone. I don't remember the name of this other stuff, but I'll find out. It makes you feel like jacked does, but lasts longer and has more nutritional value. That's just what he says, but once I get the specs on it, I'll post it up for you all to check out.