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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
    Switch to Imperial units
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Save £7.68 when you purchase these items today for only £45.86
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

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.

Thanks for your feedback!

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.

Thanks for your feedback!

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.

Thanks for your feedback!

Trusted brand

Posted by iHerb Customer on Dec 01, 2016 | Verified Purchase

I have a latent viral issue that is stimulated by too much consumption of arginine in my diet, so I use this easy-to-use form of L-Lysine to balance out any excess arginine I might consume. When I am not vigilant and end up with a viral outbreak, I begin an increased dose of 4 grams for 4 days and then back down to 500 mg 3 times per day for 2 weeks, and the outbreak is minimized and subsides almost immediately. This powder form is also more cost effective than a whole bunch of capsules.

Thanks for your feedback!