Pyruvate
Pyruvate formulas boast that they stimulate metabolism and reduce body fat. Pyruvate is found naturally in food and in the body as a result of the breakdown of carbohydrates and protein. Some studies have shown a weight-loss benefit with pyruvate supplements. But the people in the studies also exercised and cut back on calories. Moreover, the dosage used in the studies was high, requiring a handful of tablets each day. Experts say the case for pyruvate to aid weight loss is weak.

Yerba mate
Brewed into a tea, bitter Yerba mate is high in caffeine. Used in combination with other caffeine-containing herbs, like guarana and damiana, it was found in one study to delay stomach emptying time and aid weight loss. The study was short (45 days), so conclusions on keeping the weight off cannot be made.

The Bottom Line
Though all are relatively expensive and none are proved, of these top popular weight-loss contenders, chromium picolinate and CLA are probably the most studied. If you've already made up your mind to go the supplement route, you might want to give them a try. Just don't expect miracles and check with your doctor first.

More at www.phentermine-xenical-4you.com