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21st Century, L-Lysine, 600 mg, 90 Tablets

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In Stock
  • Expiration Date: May 2019
  • Shipping Weight: 0.24 lbs (0.11 kg)
  • Product Code: CEN-21062
  • UPC Code: 740985210628
  • Package Quantity: 90 Tablets
  • Dimensions: 3.8 x 2.4 x 1.8 in, 0.2 lbs (0.09 kg)
Product Overview


  • Dietary Supplement
  • Promotes a Healthy Immune System
  • 21st Century...for a Healthier Future
  • Gluten Free
  • Laboratory Tested - Guaranteed Quality

L-Lysine, an essential amino acid, must be supplied from nutritional sources. A building block of proteins, L-Lysine is important in tissue repair and production of antibodies, energy, hormones, enzymes, and more.

Suggested Use

As a dietary supplement, take one (1) tablet daily with any meal for maximum results or as directed by your healthcare provider. Do not exceed recommended dosage. Individual results may vary.

Other Ingredients

Cellulose, calcium carbonate, stearic acid, silicon dioxide, croscarmellose sodium, magnesium stearate, titanium dioxide, polydextrose, peg.

No added sugar, yeast, preservatives, artificial flavors or colors.


Consult a healthcare provider prior to use if: pregnant, nursing, on medications, have a medical condition or are planning a medical procedure. Stop use and contact a physician if adverse reactions occur.

Keep out of reach of children. Do not use if product appears to be tampered with or seal is broken. Store at room temperature.

Supplement Facts
Serving Size: 1 Tablet
  Amount Per Serving: % DV
L-Lysine Hydrochloride 600 mg **
**Daily Value (DV) not established.
iHerb Customer Reviews


Posted by 5630058896883847241 on Aug 11, 2016

didnt help me for herpes too...

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not good

Posted by 4886176809743176191 on Apr 25, 2015

it doesn't deliver

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Posted by 5035268420909248809 on Jan 31, 2015

Cheap and great product.

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Helpes with herpes!!!

Posted by 4848734342951828005 on Dec 24, 2014

I've been suffering herpes for years now. it's a total torture everytime it shows up on my lips and lasts for more than a week. I've read in the reviews that L-lysine works for herpes and decided to try it too. Let me tell you that it truly is a cure!!! I noticed that one pill a day actually work at very first signs of herpes. a couple of times I missed the first signals and had to take 2 pills 3 times a day for three days to keep herpes under control. If you found my review helpful, please press Yes below. Thank you!

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Posted by Anaterma on Aug 26, 2013

the tablets are cylindrical form, medium sized, not the easiest to swallow, good price. strange that it suggests taking only one when other brands have 1000 mg versions, but whatever. i take sometimes one before sleep and give one or two to my boyfriend to help overall body restoration. maybe i'm imagining things, but i feel that sometimes after i take it it gives me a strange tingling sensation both inside and on the skin, it's minuscule, thou.

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