Your body needs arginine, more commonly known as L-arginine in supplement form, to carry out several important functions. It’s an amino acid that helps build proteins. It’s especially important for ...

A few studies suggest that L-glutamine supplements may help IBS symptoms, but more research needs to be done. L-glutamine, or just glutamine, is an amino acid. Amino acids are molecules that form the ...

Some evidence suggests that L-tryptophan supplements may help to treat conditions such as anxiety and sleep disorders. However, more research into the safety and efficacy of L-tryptophan supplements ...

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-theanine is a compound that may support thinking, sleep, and relaxation and help with weight loss, blood pressure, and more. Research suggests that L-theanine might provide a range of health ...