Source Naturals L-Lysine 500 mg， Essential Free-Form Amino Acid， 250 Tablets<div style="text-align: left;"><strong>[Product Information]</strong><ul><li class="showHiddenFeatureBullets"><span class="a-list-item"> An essential free-form amino acid </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Acts as a precursor for other amino acids including L-carnitine(needed for fat metabolism) </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Crucial to the formation of collagen， a major part of the body's connective tissues </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Also contributes to energy production when converted into acetyl coenzyme A， one of the principal fuels for the Krebs cycle </span></li><li class="showHiddenFeatureBullets"><span class="a-list-item"> Available in powder form， 500 mg and 1，000 mg tablets， and 500 mg capsules </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/31CVR6JdIkL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41kDowGdfvL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/414t8odM0NL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31f2SKsM4zL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/416rJKavVGL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/31TyGxy4HbL.jpg" noproxy>