| The active ingredient in ephedra is the chemical ephedrine, which can be converted into the street drug methamphetamine. |
| But ephedra also increases heart rate, which can cause heart rhythm problems. |
| After ephedra vanished, the market experienced a lull in effective fat-burners. |
| The drug contains 18 herbal ingredients, including ephedra, an herb that has been linked to dozens of fatalities. |
| Part of this tarnishing comes from the controversy surrounding an herb called ephedra. |
| Bitter orange peel contains synephrine, a stimulant comparable to the banned weight-loss aid ephedra. |
