L-carnitine can be bought as a dietary supplement, but the nutrient is also added to energy drinks and some protein powders by manufacturers to try and enhance the value of their products.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Some of these supplement names are getting out of hand. Protein powder? Easy to understand. Creatine? A ...

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L-carnitine, also called carnitine, and conjugated linoleic acid (CLA) are naturally occurring compounds. Theyve become popular for their potential to reduce body fat and enhance athletic performance.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Some of these supplement names are getting out of hand. Protein powder? Easy to understand. Creatine? A ...

DEAR DR. ROACH: I am a healthy 46-year-old woman who exercises daily for health, strength and stress relief. I also want to stay relatively lean. In order to maintain muscle mass and control fat, I’ve ...

Some of these supplement names are getting out of hand. Protein powder? Easy to understand. Creatine? A little tougher, but whatever. And now L-carnitine? It sounds like something straight out of high ...