L-Lysine HCl

L-Lysine HCl supplies the essential amino acid L-lysine. 
L-Lysine has documented immuno-supportive properties‚ is important for proper growth‚ and it plays an essential role in the production of carnitine. Carnitine functions in assisting in the conversion of fatty acids into energy‚ and may also assist in normalizing cholesterol. Additionally‚ Lysine may aide in helping the body absorb calcium‚ and it plays an important role in the formation of collagen. Since Lysine and Arginine share common pathways in the body‚ high levels of arginine may lower lysine levels in the body.

Good sources of lysine are high-protein foods such as eggs, meat (specifically red meat, lamb, pork, and poultry), soy, beans and peas, cheese (particularly Parmesan), and certain fish (such as cod and sardines).

The "HCl" denotes that the lysine is present as the hydrochloride salt. Making salts changes the properties of the lysine - e.g., making it more soluble. Once dissolved in your stomach you will have free lysine and also HCl. So there is no difference than in taking lysine or lysine HCl.