Overview

L-citrulline is an amino acid. But unlike some amino acids, L-citrulline is not used to make protein. It is found in watermelon. The name "citrulline" comes from "citrullus," which is the Latin term for watermelon. The body can also make citrulline.

L-citrulline is used for heart failure and improving athletic performance. It is also used for sickle cell disease, erectile dysfunction, high blood pressure in the lungs, and many other conditions, but there is no good scientific evidence to support these other uses.

How does it work ?

L-citrulline is a naturally occurring amino acid found in food, such as watermelon. It is also made naturally in the body. The body changes L-citrulline into another amino acid called L-arginine and also to a chemical called nitric oxide. L-citrulline might help increase the supply of ingredients the body needs to make certain proteins. It might also help open up veins and arteries to improve blood flow and reduce blood pressure.

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