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

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In Stock
  • Expiration Date: Aug 2020
  • Shipping Weight: 0.53 lbs (0.24 kg)
  • Product Code: SNS-01598
  • UPC Code: 021078015987
  • Package Quantity: 200 Capsules
  • Dimensions: 5.4 x 2.9 x 2.9 in, 0.45 lbs (0.2 kg)
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

Trusted brand

Posted by Reviewer1868309 on Dec 01, 2016

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.

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palīdz pret pinnem

Posted by 5144471266336829873 on Aug 05, 2016

ja ir problemātiska āda šis produkts tiešām palīdz

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Posted by Reviewer3267914 on Feb 18, 2016


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Good product

Posted by 5193470110066713199 on Apr 12, 2015

This is really good!

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Healing for many problems

Posted by Reviewer2406050 on Nov 05, 2014

My neurologist had me take 4x RDA for 3 months then back down to 2 of these a day. Originally took for pulsatile tinnutus and it worked at the large amount. Also take for joints. Forms collagen so good for collapsed disks and back problems too. Trust this brand. Capsules easy to swallow.

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