First of all, this is NOT ephedra. If you read the label, it contains "ephedra viridis". Their designer brand I guess. 2nd: It's nothing like it either. Back in the good ol days, 2 tabs of ephedra would make me feel like I could bitch slap chuck norris. I've taken 3 of these at once and unless I'm on an empty stomach, I don't feel a thing. I get a bigger kick off one venom or a redline |