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L-arginine is non-essential amino acid that once in the body is converted into a chemical called nitric oxide. Nitric oxide causes blood vessels to open wider for improved blood flow and L-arginine also stimulates the release of growth hormone, insulin, and other substances in the body.

The most common use for L-arginine to support the release of hormones such as testosterone which can support problems with erectile disfunction and impotence. An increase in hormones may also lead to more energy, improved sporting performance and a healthier mood.

Other area is which L-arginine maybe is used for support is heart and blood vessel conditions including congestive heart failure (CHF), chest pain, high blood pressure, coronary artery disease and recurrent pain in the legs due to blocked arteries (intermittent claudication). 
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