Carnitine is actually an essential nutrient found in the body that helps in transporting fat into your cell mitochondria where it is transformed into energy which can be used up by your body. L-carnitine can help increase burning of fat in your body, increasing your energy level, promoting a healthy heart, a healthy circulation and a healthy liver. Carnitine exists in three forms: L-carnitine for heart and cardiovascular conditions, acetyl-L-carnitine, which is used for treating Alzheimer's disease and mental problems, and propionyl-L-carnitine which is also used for improving heart conditions.

L-carnitine is widely used as a natural method for weight loss since it enables burning of fat at much higher speeds. It can also decrease your cravings, increase your energy during exercise and increase your metabolic rate.

Comment from Expert

Taking normal levels of carnitine does not lead you to experience unpleasant side effects. However, you may be able to experience having too much energy when taking them, and if you take them later during the day, you might have difficulties falling asleep. These side effects are not really reason for concern in many people, as they are mostly mild to moderate, and easy to deal with.

Some reported L-carnitine side effects include vomiting, nausea, headache, diarrhea, stuffy nose, restlessness and sleeping difficulty. Some serious side effects may include fast heartbeat rates, increase in your blood pressure and fever.