$15 off your $100 purchase, plus free shipping!
Vitacost L-Lysine

Spend $25 or more on Vitacost brand products and get FREE SHIPPING!

Vitacost L-Lysine -- 500 mg - 300 Capsules

In stock
  • Quantity: 

Enjoy our low price guarantee, plus an extra 10% off Set & Save Bonus Brands on any scheduled order.

Added to My List as a guest*.

*Your guest list will be temporarily saved until you end this browser session.

1 item added to your list

Vitacost L-Lysine -- 500 mg - 300 Capsules

Oops! Something went wrong and we were unable to process your request. Please try again.

Supplement Facts
Serving Size: 1 Capsule
Servings per Container: 300
Amount Per Serving% Daily Value
L-Lysine (HCl)500 mg*
*Daily value not established.
Other Ingredients: Gelatin (capsule), rice flour, magnesium stearate and stearic acid.
Pregnant or lactating women, diabetics, hypoglycemics, and people with known medical conditions and/or taking drugs should consult with a licensed physician and/or pharmacist prior to taking dietary supplements. Keep out of reach of children.

Vitacost L-Lysine Description

Offers support during times of mental anxiety and stress.*

What is L-lysine?

L-lysine is an essential amino acid, meaning the body cannot synthesize it on its own but it must be obtained through diet (mainly from foods high in protein). L-lysine is required for many body functions that support skin, bones, collagen and elastin.* It’s also important for normal growth and development.*

L-lysine is converted in the body to acetyl CoA, which is a critical part of metabolizing carbohydrates for energy.* Lysine is also a precursor to carnitine, which helps transport fatty acids into the mitochondria where they can be used for energy or other functions.*

Lysine has an antagonistic relationship with L-arginine, making it useful in the reduction of arginine levels.*

How does L-lysine support health?

  • Supports immune system function.*
  • May support a healthy cardiovascular system.*
  • Supports absorption of calcium from the digestive tract, making it more available for biological functions.*
  • Since L-lysine is single nutrient, it’s often combined with other herbs or amino acids to obtain complementary effects, such as immune system support or helping to reduce mental stress and anxiety, or cardiovascular benefits.*

Why choose Vitacost L-Lysine?

  • Supplies 500 mg of L-lysine per single-capsule serving.
  • Contains 300 servings per bottle.
  • Offers exceptional quality at extraordinary value. 

About Vitacost

Vitacost nutritional products are manufactured to high standards of quality, efficacy and safety. Each Vitacost product meets or exceeds the standards and requirements set forth in the FDA’s Code of Federal Regulation (21 CFR, 111) Current Good Manufacturing Practices (CGMP). 




* These statements have not been evaluated by the Food and Drug Administration.  This product is not intended to diagnose, treat, cure or prevent any disease.


As a dietary supplement, take 1 capsule daily or as directed by a physician.


Store in a cool, dry place.

Free Of
Milk, eggs, peanuts, tree nuts, shellfish, fish, soy, gluten, titanium dioxide.
These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.
Vitacost L-Lysine -- 500 mg - 300 Capsules 4.7 5 38 65
Awesome!!!!! I only buy my L-Lysine from Vitacost!! I cannot swallow pill form so they have the Capsules and I love the prices and it gets to my house so quick. I have never had a problem and I have been buying them here for over 15 years. May 7, 2015
lots of additives besides lysine keep hoping that companies would make products without many additives. May 2, 2015
Horse Pill The size of these capsules are so large they overshadow any positive comments I have; so I will not add them or could I in all good conscience recommend this product. April 27, 2015
Absolutely no problems I got this at the best price I could find anywhere. The shipping was quick and accurate. Very satisfied. September 10, 2014
One of my basics I use three of these L-lysine capsules and three of the arginine capsules before my workouts. And the same on an empty stomach in the mornings. Also the carnatine capsules with meals. A must for body building. To prep for shows, I use all three of the mentioned aminos on an empty stomach in between all my 5 meals and at bedtime. Along with other body building supplements and lots of protein. I need all the help I can get to build and keep muscle size and maintain low body fat. Vitacost brand are the best value. September 6, 2014
2 3 4 5 ... 8 next
Know someone who would love this product? Don’t keep it a secret – share it now!
Note: Your friend's email address is used for this one-time notification only. We will not collect or store or share it with any other parties.
Friend's Name:
Your Name:
Friend's Email:
Your Email:
Message to your friend: (optional, max 500 characters)
Change the CAPTCHA codeSpeak the CAPTCHA code
Enter the code exactly as shown: 
Frequently Bought Together:
People Who Viewed This Item Also Viewed