Source Naturals L-Arginine 1000mg Free-Form， Promotes Increased Circulation， 200 Tablets<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> Important factor in muscle metabolism </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Works to transport， store， and excrete nitrogen. </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> L-Arginine is a precursor for nitric oxide， which promotes increased circulation by relaxing blood vessels. </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41RC0ys2qpL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41KYbFUuqzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41UXFNU-fcL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41sa7oY8IkL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41kQRSeD1eL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41gPVODHY4L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31ngrQvaryL.jpg" noproxy>