L-carnitine is an amino acid produced by the body and found in some foods and supplements. It may offer some health benefits, including increased weight loss, improved brain function, and more.

L-theanine is an amino acid found primarily in green and black tea and some mushrooms. It’s also available in pill or tablet form. It’s said to help ease anxiety, stress, and reduce insomnia. Before ...

L-citrulline is a substance called a non-essential amino acid. Your kidneys change L-citrulline into another amino acid called L-arginine and a chemical called nitric oxide. These compounds are ...

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 ...

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Your body is an amazing collection of parts, from big things like your bones to tiny elements like amino acids. Amino acids are important—they make up proteins that build muscle and bone—and you can ...

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I often encourage my patients to drink tea. Black tea is a lower-caffeine alternative to coffee during the day, and decaffeinated tea can be a calming part of a nighttime power-down ritual before bed.