L-Carnitine is a substance that is naturally occurring in the body. It helps convert fatty acids into energy needed by for a healthy heart, important body functions and physical activities. Supplementary L-Carnitine may contribute to optimal fat oxidation, and along with proper diet and regular exercise, may also promote a healthy body weight.
That is printed on the label of Del Monte Fit N' Right juice drink. With a number of beverages sold in the market as health drinks, this may actually be one. You get to choose from three flavors: apple, pineapple and four seasons. The brand boasts of its L-Carnitine content, saying that having 3 servings of the juice and with a proper diet and exercise, a high 16% body fat reduction can be achieved.
The key elements are proper diet and exercise; not L-Carnitine. There is no scientific evidence that it can improve weight loss.* Still it has a number of studies showing some health benefits especially for the cardiovascular system. The drink is reasonably priced so I'd rather buy it than other beverages that are mainly sugar dissolved in water. Speaking of sugar, maybe Del Monte can make a sugar-free version of the drink. Just a thought.
* from the University of Maryland Medical Center
14Aug2014 Update:
There has been research that L-carnitine can contribute to atherosclerosis.