You may want to watch out for ripped fuel, diet fuel, etc.. I know because I was an avid user of these products some years ago. I started to sweat profusely from taking them (this was not only embaressing, but very harmful to my health) I also had an erratic heartbeat. The other thing I have learned about these is that they are harmful if not used correctly. They are meant to be used by someone who exercises. If you do not exercise taking a product that speeds up your system and not exerting that energy can have drastic effects on your heart. Try exercise. I have worked out for 7 years now and it is the best thing anyone can do for themselves

HTH