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Life Extension, L-Lysine, 620 mg, 100 Veggie Caps

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In Stock
  • Expiration Date: Sep 2018
  • Shipping Weight:
    0.35 lbs
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  • Product Code: LEX-16781
  • UPC Code: 737870167815
  • Package Quantity: 100 Veggie Caps
  • Dimensions:
    2.4 x 2.4 x 4.5 in, 0.3 lbs
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Product Overview


  • Foundation for Longer Life
  • Essential Amino Acid Support
  • Dietary Supplement


Lysine is an essential amino acid necessary for growth and to help maintain nitrogen balance in the body. It may help promote proper nitrogen balance in the body and prevent glycation, the bonding of a sugar and protein or lipid molecule accelerated by elevated levels of sugar in the blood.

Lysine has many functions in the body because it is incorporated into many proteins, which are used for a variety of purposes.

Most people consume adequate amounts of lysine. However, vegans whose diets contain large amounts of grains and only minimal amounts of beans could become lysine deficient. Athletes involved in frequent vigorous exercise have an increased need for essential amino acids, although most diets meet these increased needs. The essential amino acid requirements of burn patients may exceed the amount of lysine in the diet.

Lysine supplementation has been shown to increase the absorption and retention of calcium. Some researchers believe that the disturbed balance of arginine and lysine may play a role in viral problems.

Lysine works with other essential amino acids to maintain growth, lean body mass and the body’s store of nitrogen. In addition, dietary supplementation with the essential amino acid L-lysine has been shown to promote relaxation in humans with low dietary intake of L-lysine. L-lysine, together with arginine, has been documented to promote healthy hormonal stress responses in humans.

Suggested Use

Read the entire label and follow the directions carefully prior to use.

Take one (1) capsule one to three times daily on an empty stomach, or as recommended by a healthcare practitioner.

Other Ingredients

Vegetable cellulose (capsule), vegetable stearate, l-leucine.


  • Keep out of reach of children.
  • Do not exceed recommended dose.
  • Do not purchase if outer seal is broken or damaged.
  • When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

Store tightly closed in a cool, dry place.

Supplement Facts
Serving Size: 1 Vegetarian Capsule
  Amount Per Serving % Daily Value
L-Lysine (as L-Lysine HCl) 620 mg **
**Daily Value not established
iHerb Customer Reviews

High quality product

Posted by 4779856091443383042 on Feb 16, 2017

Like it that these come in veggie caps instead of tablets, which is hard to find for L-lysine supplements. They go down easier and don't have magnesium stearate or other bad addittives in them. Also like the dosage of 620 mg.

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Great brand

Posted by 4849866154477566499 on Feb 06, 2017

I always have good experience with Life Extension products. Lysine is good, it improves my performance, although I take it together with other supplements.

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I still don't know the affects of this

Posted by 4714581157278223732 on Oct 08, 2014

Tried a week with Tried a week without don't feel a thing.. could be just me. or the changes could be internal and not felt in the short term.

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Good l-lysine if you take capsules not powder

Posted by Reviewer3092624 on Dec 21, 2013

This L-lysine is a a good value for the price. I was using the powder, but found it too inconvenient. I take one a day unless I am fighting a virus or a cold sore, then I increase it as needed.

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not terrible

Posted by 5040612618603292325 on Aug 30, 2013

I preferred of lysine powder, because to follow the therapy of Linus Paulin I need at least 3 grams with your gellules it is not practical. I am in search of another vendor. cordially

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