Recently read Lyle McDonald's rapid fat loss diet and was surprised to see him claiming that EC stack is extremely effective at increasing fat loss and metabolism. Ever the skeptic, I hit pubmed and found that it's true -EC stack is clinically proven to have a significant impact on weight loss. So I want to try. From what I understand ephedrine HCL is still legal in the US - my question is, is it as effective as Ephedra and where do you get either? Another question is.. does caffeine tolerance effect the efficacy of the stack? Should I detox from coffee/caffeine before starting a stack? Would appreciate any resources/your experiences with EC or links.