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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: 06/2021
  • Shipping Weight:
    0.24 kg
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  • Product Code: SNS-01598
  • UPC Code: 021078015987
  • Package Quantity: 200 Capsules
  • Dimensions:
    13.7 x 7.4 x 7.4 cm , 0.2 kg
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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.

Supplement Facts
Serving Size: 1 Capsule
  Amount Per Serving %DV
L-Lysine (HCl) 500 mg
†Daily Value not established.
iHerb Customer Reviews

Good quality Lysine, works well to keep my immunity up

Posted by Cbones on Nov 08, 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 Jul 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 Jun 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!

Thanks for your feedback!


Posted by iHerb Customer on Mar 05, 2017 | Verified Purchase

Have been using Lysine for years as a cold sore preventative and it also sems to help the symptoms of Menieres Disease - so I will continue taking it. These capsules seem to be just the right strength at one a day to keep cold sores at bay and reduce the severity of Vertigo attacks.

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Ver y effective

Posted by iHerb Customer on Feb 11, 2017 | Verified Purchase

I have used one capsule of this lysine combined with Quantum health Super Lysine + Cold Sore treatment from this site. What an awesome deal this is ! Cold sore gone in 3 days, instead of 10. It did not open , so therefore no scab to heal. Just a red puffy area, easy to dab with concealer, or makeup. Thanks glad you sell these 2 products.

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