this is funny, i just mentioned this product i am about to mention as a substitute for an ephed stack, and i am happy to do so. it's called thermaxin by enduragen nutritional sciences, wwww.thermaxin.com(sorry i don't know how to put this in here so you can just click to it. anyway it has 360 mg per capsule and it also has l-tryrosine. i have been using it for 2 months now and i am absolutely in love with it. it also provides a great boost of energy. hope this helps.