Thermoslim, Trim Life and Hydroxy Cut are brand names for diet pills that contain ephedrine, caffeine and chromium picolinate. Also known as Ephedra or Ma Huang, it is an herbal extract grown in China and Mongolia. It is an effective short-term weight loss supplement and fat burner. It is often combined with guarana (caffeine) to boost metabolism. The drug has been linked to 800+ incidents, including high blood pressure, severe headaches, heart rate abnormalities, seizures, heart attacks and even death. Ephedra derivatives have also been reported to cause acute hepatitis and other liver problems. Combined with caffeine, the effects are even greater amplified. The FDA recommends taking no more than 8 milligrams a day of ephedrine for no more than 7 consecutive days.