I want to start taking an ECA stack. I was told that by buying separate ingredients ephedrine, aspirin, and caffeine I could get a more potent stack. My question is this, how much of each do I take and how often can I take it? I am not sure on the appropriate milligrams of each. I know that a lot will depend on my personal tolerance. I am also pretty sure that I shouldn???t take it after 5PM or so if I want to sleep that night. Any help is appreciated.