L-Lysine 500mg Capsules

L-Lysine 500mg Capsules

  • $27.49

Provides relief from cold sores

500 mg Vegetarian Capsules

1000mg Tablets also available - CLICK HERE

Natural Factors L-Lysine is an essential amino acid supplement that helps reduce the recurrence of the herpes simplex virus (HSV). It targets stubborn cold sores, helping to reduce severity and healing time. The body needs L-lysine for muscle protein synthesis, and to form collagen and repair tissues such as the skin, tendons, and bones. Each capsule contains 500 mg of L-lysine in its most active free form.

Uses and benefits

  • Helps reduce the recurrence, severity, and healing time of cold sores
  • Used therapeutically for HSV infections
  • Supports collagen formation and tissue repair
  • Provides an essential amino acid for muscle protein synthesis
  • Contributes to the maintenance of good health

Feature summary

Natural Factors L-Lysine provides relief from the herpes simplex virus (HSV), helping reduce the recurrence, severity, and healing time of cold sores. As one of the nine essential amino acids that the body relies on to manufacture protein, L-lysine has important roles in the synthesis of collagen, tissue repair, and the production of hormones and enzymes. This makes L-lysine an important nutrient for maintaining a healthy immune system, especially when combined with an adequate intake of vitamin C.

L-lysine is considered “essential” because the body cannot manufacture it and it must be obtained through dietary sources. People with HSV can include L-lysine as part of their nutritional strategy to help keep the virus in check and prevent flare-ups of uncomfortable lesions around the mouth and genitals.

Natural Factors L-Lysine is a pharmaceutical-grade, free-form amino acid, meaning it is more effective than the form obtained directly from food. Each two-capsule serving provides 1000 mg of L-lysine to be taken three times per day for the most effective absorption. This is a great choice for anyone who is prone to HSV flare-ups, as well as vegetarians and other people who may not get sufficient L-lysine through their diet.


Each capsule contains: 
L-Lysine (hydrochloride)......................... 500 mg


Non-medicinal ingredients: Vegetarian capsule (carbohydrate gum [cellulose], purified water), rice flour, vegetable grade magnesium stearate (lubricant), silica.


Contains no artificial colours, preservatives, or sweeteners; no dairy, sugar, wheat, gluten, yeast, soy, corn, egg, fish, shellfish, animal products, salt, treenuts, or GMOs. Suitable for vegetarians/vegans.

Recommended adult dose:

2 capsules 3 times daily or as directed by a health care practitioner.