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

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

http://www.livestrong.com/article/4233-need-benefits-l-arginine/

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

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

http://www.raysahelian.com/arginine.html

http://www.bodybuilding.com/store/arginine.html

http://www.yohimbebark.net/arginine.html

http://www.nlm.nih.gov/medlineplus/druginfo/natural/patient-arginine.html

http://www.smart-publications.com/sexual_health/l-arginine.php