The amino acid known as L-citrulline is made naturally in your body. Research isn’t clear whether these supplements will help boost exercise performance, lower blood pressure, or help with erectile ...

L-glutamine, sometimes simply called glutamine, is an amino acid that plays a key role in many aspects of your health. In fact, studies show that it’s essential for immune health, cell function, and ...

L-carnitine, also known as levocarnitine, is a naturally occurring amino acid structure that the body produces. It plays a critical role in energy production, converting fat into energy. Most people ...