1. A naturally occurring compound found in animal tissues and cells that plays a key role in transporting fatty acids into mitochondria for energy production.
Usage: biochemistry term; also called L-carnitine in its active form

Examples

• Carnitine is essential for converting fat into energy in the body.
• Red meat and dairy products are rich sources of carnitine.
• Athletes sometimes take carnitine supplements to improve endurance.
• The body can synthesize carnitine from the amino acids lysine and methionine.
• Carnitine deficiency can lead to muscle weakness and fatigue.