I recently received a free sample of Designer Supplements StimulantX. It's like an Ephedra type pill and it also keeps you alert. Just like any Designer Supplement product I've bought this shit delivers. I feel like I am on top of the world, my workout was great, I stayed focused and I've been amped all day. It also cleared my sinuses. I've tried Superdrol, Rebound XT by Anabolic Extreme and they have been top notch products. Just thought I'd share some feedback on this. I got the free sample here.