http://en.wikipedia.org/wiki/Arginine

http://www.l-arginine.net/

http://www.drugs.com/npp/l-arginine.html

http://altmedicine.about.com/cs/herbsvitaminsad/a/Arginine.htm

http://www.mayoclinic.com/health/l-arginine/NS_patient-arginine

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http://www.themenschoice.com/LArginine.html

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