Ephedrine is a potent drug. It is a powerful drug which I would highly recommend, but it is crucial to use only legitimate substance. Which is nearly impossible to believe. Since Kaizen was made unavailable in the UK I've visited numerous sites. I've found that 30mg is enough for me, and it works much better when utilized in conjunction with an ECA stack. I've had a few luck recently though! I'm not certain if I can post links here, but the stuff these guys sell has been as close as Kaizen that i have ever experienced. It's powerful stuff for sure. I've lost a ton of weight , and am now near 10% body fat. They are definitely worth it. Anyway yeah here's the link ECA stack UK (Sorry for my English i'm from Iceland)