i am using zantrex right now. and i have used xenadrene (WITH ephedra) well thank god they banned ephedra because it messed my system up royaly. anyway, i am a pretty busy person, and the zantrex has given me the energy i need to go the the gym and stay active. i don't think it would help me lose much weight by itself, but it helps by giving me that energy i need. i think that is what you will find with most of the pills out there. weight training would probably be the best thing for you. you will build muscle faster which will burn more calories than fat.

good luck!!