Jack3d is not a weight loss supplements and it is not the best sup for cardio exercise.
It is a preworkout supplements which is aimed at stimulating, pumping you up, psyching you up (literally) for your workout.
I did read something about one of the ingredients 1,3-Dimethylamylamine being an appetite suppresant ( that's not the way you wanna lose weight!)
AAKG+creatine+caffeine could make you sweat more than usual but often with creatine you observe water retention.
Go with a fat burner that contains l-carnitine+chromium and stims like caffeine or guarana if you support it