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Source Naturals, L-Lysine, 500 mg, 200 Capsules

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Source Naturals, L-Lysine, 500 mg, 200 Capsules

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Source Naturals, L-Lysine, 500 mg, 200 Capsules

In Stock
  • Expiration Date: June 2021
  • Shipping Weight:
    0.24 kg
    Switch to Imperial units
  • Product Code: SNS-01598
  • UPC Code: 021078015987
  • Package Quantity: 200 Capsules
  • Dimensions:
    13.7 x 7.4 x 7.4 cm , 0.2 kg
    Switch to Imperial units

Product Rank:

#15 in L Lysine >
Frequently Purchased Together
Product Overview


  • Amino Acid Supplement
  • Free Form

L-Lysine is an essential free-form amino acid, which acts as a precursor for other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial to the formation of collagen, a major part of the body's connective tissues. L-Lysine also contributes to energy production when converted to acetyl coenzyme A, one of the principal fuels for the Krebs Cycle.

Suggested Use

1 to 2 capsules daily.

Other Ingredients

Gelatin (capsule), microcrystalline cellulose and magnesium stearate.

Hypoallergenic: contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives or artificial color, flavor or fragrance.


Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.

Do not use if either tamper-evident seal is broken or missing. Keep out of the reach of children.


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: 1 Capsule
  Amount Per Serving %DV
L-Lysine (HCl) 500 mg
†Daily Value not established.
iHerb Customer Reviews

Happy with Source N L-Lysine

Posted by iHerb Customer on March 20 2018 | Verified Purchase

I have to take 3000mg per day and I am so happy that my stomach has no Problem with that! But that I do not have to "eat" all the capsules in the morning (in total 12 but only 3 L-L) I open them and put them into a Shaker with kokosmilk and schokolade pulver

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Broken Seal

Posted by iHerb Customer on December 29 2017 | Verified Purchase

Unfortunately, it arrived with a broken seal... :(

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Good quality Lysine, works well to keep my immunity up

Posted by Cbones on November 8 2017 | Verified Purchase

Smaller easier-to swallow capsules, compared to the other Source Naturals Lysine (in Tablets)-- which makes it a bit less value for money, but if you're someone that struggles with big tablets, then get this one. They are all very good quality, they are easy to digest and swallow, and they seemed to make a marked difference in my immunity, especially prevention of cold sores. Note, to actively get rid of a cold sore infection that was in full force, I had to up the dosage significantly, to about 4-6 capsules daily, for about 2 days. Otherwise, 1-2 per day is perfect for prevention. I also felt it has helped my body and joints, and I feel less pain too.

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excellent for viruses!!

Posted by iHerb Customer on July 13 2017 | Verified Purchase

anytime i come across a virus flu or cold or when I feel my heart in "infected" with any kind of virus (heart palpilations, nauseous), then lysine comes to help me tremendously! I highly recommend it to everybody. I even give it to my kids with some vit C for better absorption. On an empty stomach always.

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I appreciate what this product does for me!

Posted by iHerb Customer on June 22 2017 | Verified Purchase

I have a tendency to get fever blisters and eventhough I heard years ago L- Lysine would help prevent fever blisters I did not try it. I was having problems again a year or so ago and Googled L-Lysine and was surprised how many people testified in behalf of Lysine, so I tried and it does work and I will continue to use this product!

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