Do your research before you decide on these supplements.
http://www.livestrong.com/article/179961-dangers-of-the-lipo-fat-burner/
The Nutrex Research Lipo 6 fat burner is an energy and diet supplement that comes in pill form. According to the company, Lipo 6 has been selected as fat loss product of the year four times, which suggests it may be effective for you. Nutrex Research notes that Lipo 6 is proven and reliable, but doesn't mention safety. Unfortunately, as effective as Lipo 6 may be, some of its ingredients may cause dangerous side effects. Consult a doctor before using this or any other supplements.
http://health.howstuffworks.com/wellness/diet-fitness/diets/hydroxycut.htm
Hydroxycut Side Effects
Because it's a stimulant, Hydroxycut can give you heart palpitations, sweaty palms, headaches, dizzy spells and sleepless nights. And if that's not enough fun, you can become dehydrated, restless and develop a mean case of the shakes [Source:
Body Building for You].
And, as mentioned on the previous page, the FDA warning for consumers to stop taking Hydroxycut products comes on the heels of more than 20 reports of liver-related health problems, including the death of a 19-year-old boy. The reports included everything from jaundice and elevated liver enzymes to liver damage so advanced it required a liver transplant. In addition to these liver-related issues, other health problems associated with Hydroxycut usage have been reported to the FDA, including cardiovascular disorders, muscle damage known as rhabdomyolosis and seizures [source:
U.S. FDA].