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NOW L-Citrulline


Precursor to L-Arginine, a non-essential amino acid that is involved in protein synthesis. L-Citrulline plays a major role in several important amino acid pathways that help support creatine formation, which is an important factor in muscle energy and body composition; and is a precursor to L-Arginine involved in removal of toxic urea and boosting Nitric Oxide, an important factor in blood flow and cardiovascular health. Although non-essential, research supports that supplementation of L-Citrulline plays an important role in weight training and other high intensity athletics in aerobic and non-aerobic activities. This powder version allows for controlled dosing and can be added to health shakes.


L-Citrulline is a naturally occurring non-essential amino acid. Although L-Citrulline is not used in protein synthesis directly, it has several important functions with respect to amino acid and protein metabolism. L-Citrulline is involved in the formation of urea in the liver; and the synthesis and elimination of urea is essential for removing toxic protein metabolites from the body. L-Citrulline functions along with Arginine and Ornithine to rid the body of ammonia (urea), a by-product of protein metabolism. This can help buffer lactic acid levels and reduce muscle fatigue, which is extremely important in both weight training and endurance sports. In addition, L-Citrulline facilitates protein synthesis for muscle tissue retention and helps to maintain healthy protein balance. Because Citrulline is a precursor of Arginine, it provides a readily available source material for Arginine production, which in turn, can be used for the production of Nitric Oxide (NO). NO plays a fundamental role in vascular function and blood flow.



Adult Dosage: Take ½ teaspoon 2 times daily between meals.

Ingredients (each ½ level teaspoon contains):

L-Citrulline……………………………...............……………..….....…1500 mg

Non-Medicinal Ingredients: