What is L-Lysine?
An essential amino acid, L-Lysine is not produced by the body, but is necessary for human health. The compound is required to create various proteins, including collagen and elastin. L-Lysine's support of these two specific proteins helps to nourish all connective tissues in the body, promoting skin, bone and joint health. In bone health, the amino acid is also associated with optimal calcium absorption, a benefit linked to its ability to increase production of calcium-binding proteins. L-Lysine’s influence on protein synthesis also maintains muscle health and promotes muscle repair, which has made it a favored sports nutrition supplement among bodybuilders.**
L-Lysine is a popular nutritional supplement for addressing cold sores and fever blisters. Research has suggested that this reputation may be due to L-Lysine’s ability to modulate immune responses, trigger production of key antibodies and optimize overall immune system performance. Additional benefits tied to this key amino acid include support for overall cardiovascular wellness; it is believed to promote free-flowing circulation along with balanced blood pressure and blood lipid levels. Further investigations have shown that this amino acid may encourage a calm and balanced mood; it appears to support a healthy response to stress.**
Dietary sources of L-Lysine include beef, poultry, eggs, milk and beans. Vegetarians and vegans in particular are more likely to have a deficiency in the amino acid and may benefit from supplementation. Due to its role in protein production and its support of healthy bones and joints, the nutrient in supplemental form may also be useful to athletes and other highly active people.**
L-Lysine supplement products are regularly offered in capsule, tablet and powder form. It is also available in topical creams, lip balms and ointments for cold sores. The nutrient is sometimes combined in a formula with other amino acids, including L-Proline or L-Arginine.**
L-Lysine Directions for Use
It is important to talk with your health care professional before beginning any routine supplementation. Although no recommended level has been set, common L-Lysine dosage in capsules and tablets ranges between 500 mg and 1,000 mg.**