Taking L-arginine as a supplement may increase blood flow and muscle growth. For some, it may also cause side effects, such as nausea or diarrhea. L-arginine is one of the amino acids the body needs ...

Arginine, or L-arginine, is one of 20 amino acids that you get from proteins in your diet. It’s typically considered a semi-essential amino acid. That means you can usually get enough of it from diet ...

L-arginine is an amino acid that may help promote blood flow, athletic performance, and wound healing, among other benefits. But taking L-arginine supplements may interact with certain medications.

L-arginine is one of many amino acids the body needs to function properly. Like other amino acids, L-arginine plays a role in building protein. The body can use the protein to help build muscle and ...