baryar
There is nothing SPECIAL in hydroxycut or xenadrine type supplements. Think of them as just being overpriced caffeine.
In terms of side effects they are the same as drinking too much chai or coffee (makes it hard for you to fall asleep and you will feel extremely hyper). Save your money and try clenbuterol HCL (should be available at any medical store).
2 weeks on and then 2 weeks off because the body adapts to it very fast. Dont take more than 200 micrograms a day max. You can read more about it on any bodybuilding website