Citrulline is made in the liver and intestine, consumed in foods such as watermelon and cucumbers, and available as a dietary supplement. In the United States, the Food and Drug Administration ...

Medically reviewed by Femi Aremu, PharmD L-citrulline is an amino acid naturally made in your body. While most amino acids build proteins, L-citrulline helps to form arginine (which helps build ...

It can be synthesized from the amino acid citrulline through the breakdown of body proteins or obtained through dietary protein intake from foods like meat, poultry, dairy, nuts, fish, and soy ...