diet pills vs supplements

Hello, my name is Amanda and I desperately trying to lose weight. I have tried dieting and exercise but nothing seems to work. I am worried if I don't lose weight soon I may start having health issues. I've debated if I should start using diet pills or try some supplements. I am not sure which way to go though. I've heard Phentermine is a good diet pill and gets results. I also recently came across a website called My TruVision. It sells a lot of supplements that seem really healthy. The person on the site shows she had really good results with their product. I was just wondering if anyone has used any of these products or any ideas on what else I can do to lose weight.

~Amanda