Xenadrine- this diet pill is not a winner. It raised my blood pressure over 40 points just in a matter of 15 minutes after taking it and not partaking in anything active. I believe it is deadly. My advice to you is to stay away from this one. I have also tried Hydroxycut which gave me the same effects as this one rapid heart beats feeling like my heart was going to jump out of my body along with the high blood pressure. My advice to lose weight would be to get on weight watchers. It has worked for me and it is truly a healthy way to lose weight.