Added to Cart
Cart Total:
Customers Also Bought:
24/7 Help

Source Naturals, L-Lysine, 500 mg, 250 Tablets

$11.70 $11.70 (Saved $9.28)

Thank you!

Your email is being processed.

Source Naturals, L-Lysine, 500 mg, 250 Tablets

Our Price:
You Save:
$9.28 (44)
  • Quantity Discount
  • Buy 3+
    Save 10%

Sorry, this product is no longer in stock.

Earn 5% Loyalty Credit ?

Source Naturals, L-Lysine, 500 mg, 250 Tablets

In Stock
250 Tablets
100 Tablets
250 Tablets
  • Expiration Date: 10/2020
  • Shipping Weight:
    0.71 lbs
    Switch to Metric units
  • Product Code: SNS-00140
  • UPC Code: 021078001409
  • Package Quantity: 250 Tablets
  • Dimensions:
    2.9 x 2.9 x 5.3 in, 0.6 lbs
    Switch to Metric units
Combo Offer!
Save $10.00 when you purchase these items today for only $61.69
Product Overview


  • Free-Form
  • Dietary Supplement

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 tablets daily.

Other Ingredients

Sorbitol, stearic acid, modified cellulose gum and magnesium stearate.

Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.


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 Tablet
  Amount Per Serving %DV
L-Lysine (HCl) 500 mg
† Daily Value not established.
iHerb Customer Reviews

helps with immunity

Posted by iHerb Customer on Aug 20, 2017 | Verified Purchase

I've been taking this for years to keep me from having break-outs. Really helps.

Thanks for your feedback!

Great for preventing and reducing cold sores

Posted by iHerb Customer on May 01, 2014 | Verified Purchase

Product is an excellent price; so good that I have them sent to Adelaide, Australia at this price.

Thanks for your feedback!

Easy to take!

Posted by iHerb Customer on Dec 20, 2012 | Verified Purchase

No herpes out brakes yet, we will see :)

Thanks for your feedback!


Posted by iHerb Customer on Jun 14, 2012 | Verified Purchase

I take this everyday or if I have forgotton with a lysine balm when I feel the tingle of a cold sore and they never get any further than that!! I have suffered with cold sore's since a very small child and this is the first thing that has worked.

Thanks for your feedback!

Abdominal Aortic Aneurysm (AAA) reduces its size.

Posted by iHerb Customer on Feb 21, 2012 | Verified Purchase

This extraordinary product taken concomitantly with other antioxidants (Melatonin, vitamin C with 100 mg Bioflavonoids NOW C-1000 -1 every 12 hours-, Proline), and Multi-Vitamin/Mineral, Iron-Free has helped me reduce the size of my Abdominal Aortic Aneurysm. I highly recommend. Very important: do not mix vitamin C with iron, as this mixture produces free radicals. If you should take iron, it takes 12 hours before or after, vitamin C. For now, doctors have decided not to intervene surgically to place a stent. Has been extraordinary. Note. - Reducing the size of the AAA is documented with CT's (Angio Computed Tomography)

Thanks for your feedback!