L-Citrulline Malate benefits your performance at the gym by enhancing amino acid utilization in skeletal muscle and increasing blood flow while supporting ATP production. After absorption, citrulline either maintains its structure or gets converted to arginine, an amino acid commonly consumed to enhance strength and endurance. Additionally, arginine may improve mental clarity, alertness, & memory due to it being an intermediate in brain protein synthesis. " L-Arginine metabolism in the brain is very important for normal brain function."

Citrulline is a non-protein amino acid, meaning it is not used to form proteins, which also means that it is not found in abundance in common food sources. Watermelon has the highest natural content of citrulline, despite watermelon having ~1g protein per serving. L-Citrulline is bonded to malic acid in a 1:1 ratio to result in citrulline malate.

Citrulline malate is the form studied in patients with fatigue that has been shown to increase ATP production and creatine phosphate regeneration.

Dosage: 3-6 grams per serving is optimal for health and performance benefits. It's important to keep in mind that one should start on the lower end of the spectrum and increase dosage only once tolerance has been accessed. It is best to consume citrulline malate on an empty stomach, with optimal times being upon waking in the morning, 30-60 minutes before a workout, or before bed.

Scientific Name: 2-amino-5-(carbamoylamino)pentanoic acid/Hydroxybutanedioic acid
aka: Citrulline Malate,  L-Citrulline Malate, Malate de Citrulline
Origin: China
Notes: Kosher Certified. Non-irradiated. CAS#54940-97-5
Specifications are subject to change without notice.
* FDA disclaimer

ReferencesReferences
National Institute of Health
National Institute of Health, pdf   
Unbound Medicine