| Citrulline is a non-essential amino acid that serves as an important intermediate in the urea cycle, functioning along with Arginine and Ornithine to rid the body of ammonia, a by-product of protein metabolism. Because Citrulline is a precursor of Arginine, it provides a readily available source material for Arginine production, which can then be used for the production of Nitric Oxide (NO). NO plays a fundamental role in vascular function and blood flow. Citrulline therefore, not only supports detoxification pathways, but also supports NO production and a healthy cardiovascular system. NOW® L-Citrulline is Pharmaceutical Grade (USP).
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