l-Carnitine is an amino acid found abundantly in skeletal and heart muscle. It functions primarily to support fat utilization. Also acts as a carrier of fatty acids into the mitochondria, where they are oxidized and converted to energy. l-Carnitine also facilitates the removal of short and medium-chain fatty acids from the mitochondria that accumulate during normal metabolic processes. A randomized double-blind, placebo-controlled trial of l-carnitine involving 101 volunteers indicated that l-carnitine helped maintain healthy cardiac enzymes including lipid peroxides and lactate dehydrogenase.
In combination with other cardiovascular support agents, l-carnitine supported ventricular function and superoxide dismutase enzyme activity in human volunteers. Long-term l-carnitine supplementation indicated positive support for cardiovascular health after a 3-year follow-up in adult subjects. A recent placebo-controlled clinical study found that l-carnitine-l-tartrate supplementation helps physical recovery from high- intensity exercise. l-Carnitine-l-tartrate contains 68% pure l-carnitine and 32% natural l-tartaric acid.*