An α-amino acid (2-amino-5-guanidinopentanoic acid) that occurs in most proteins and is considered conditionally essential in humans and some other animals.

Arginine is important for the body's production of nitric oxide, which helps improve blood flow.

A supplement form of the amino acid used to support cardiovascular health and enhance athletic performance.

Many athletes take arginine supplements to boost their endurance and muscle growth.

arginineadjective

Relating to, containing, or derived from arginine.

The researchers analysed arginine metabolites in the blood sample.