L-Lysine - Essential Amino Acid Support – 620 MG (100 Capsules)

L-Lysine - Essential Amino Acid Support – 620 MG (100 Capsules)

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About This Product

  • Provides essential amino acid support
  • Non-GMO and gluten-free

L-lysine is an essential amino acid and building block of protein that encourages a healthy stress response, helps inhibit glycation, and supports bone and vascular health. L-lysine can only be obtained through diet, making it trickier for certain individuals—we’re looking at you, vegans—to get the right balance of essential amino acids day-to-day.

Formulated with 620mg of l-lysine per serving, these capsules from Life Extension are a convenient way to ensure you get enough of this essential amino acid.

Frequently Asked Questions

What is glycation?

While natural with age, glycation is a biochemical reaction that is often accelerated by elevated levels of sugar in the blood, resulting in the formation of advanced glycation end-products (AGEs). Research suggests AEGs contribute to wrinkles and loss of skin elasticity.

Directions

Take one (1) capsule one to three times daily on an empty stomach, or as recommended by a healthcare practitioner. Store tightly closed in a cool, dry place.

Warning

Keep out of reach of children. Do not exceed recommended dose. Do not purchase if outer seal is broken or damaged. When using nutritional supplements, please consult with your physician if you are undergoing treatment for a medical condition or if you are pregnant or lactating.

Read More
Serving Size: 1 Capsule
Number of Servings: 100 Servings
Amount Per Serving
% Daily Value
L-LYSINE  - L-LYSINE HCI
**%

Other Ingredients:

Vegetable cellulose (capsule), vegetable stearate, l-leucine.

Brand:
Life Extension
Form:
Vegetarian Capsules
Strength:
620 MG
Serving Size:
1 Capsule
Number of Servings:
100 Servings
Price per Serving:
($0.11 / serving)
Product Weight:
5  OZ
Specialty Diets:
Non-GMO ,  Gluten Free
Item # :
UX-13552 / 2300614
75 Ratings
4.8out of 5 stars
75 Ratings

Rated 5 stars by 92% of reviewers

Rated 4 stars by 3% of reviewers

Rated 3 stars by 3% of reviewers

Rated 2 stars by 0% of reviewers

Rated 1 star by 3% of reviewers

Would you recommend?
1-10 of 75 Reviews
Rated 5 out of 5
Feb 9, 2026
Must try amino support
I've tried a lot of amino acids through the years, and I have found this one to be the most effective. And I love that the dosage is 620 mg.
Rated 5 out of 5
Jan 1, 2026
LOVE IT!
Works very very well. Love it. I feel it healing my body within days of use. Would re-purchase again..
Rated 5 out of 5
Dec 10, 2025
Effective daily supplement
Have used this product for many years. It has been effective, easy for me to swallow and has been helpful managing certain health issues.
Rated 5 out of 5
Oct 29, 2025
amazing
works!
Rated 5 out of 5
Oct 26, 2025
Good quality
I feel good knowing I'm getting a high quality product!
Rated 3 out of 5
Oct 10, 2025
Good but not too needed at this time
Ok but didn't notice a difference
Rated 5 out of 5
Aug 8, 2025
good
good
Rated 5 out of 5
Jul 6, 2025
L-Lysine
This essential amino acid is a great product, with so many health benefits. Glad you carry it.
Rated 5 out of 5
Jun 6, 2025
A must in your health routine.
I have used this brand of L-Lysine for years. I recommend it to so many people with great results. Now I'm buying directly and know it's the true product.
Rated 5 out of 5
Apr 18, 2025
Couldn't live without it
Immediately take care of any itching.
Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.

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2 Questions
Why did you choose this?

on sale other brands were out of stock

other

best available for the price

works well with sensitivities

Hi- Why does the online ingredients list include “l-leucine” (last item) but the actual bottle does not? I asked an in-store employee and they did not know.
Disclaimer:

Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of the Vitamin Shoppe. Vitamin Shoppe does not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.

 

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Experts Break it Down


5 Groups of People Who Could Benefit From More Amino Acids

5 Groups of People Who Could Benefit From More Amino Acids

Just like some folks can benefit from including more calcium or omega-3s in their diets, certain groups of people can reap better health by ramping up amino acids. Read on to discover if you’re one of the many people who could use more aminos in your life.

Which Pump-Boosting Amino Acid Is Better: L-Arginine Or L-Citrulline?

Which Pump-Boosting Amino Acid Is Better: L-Arginine Or L-Citrulline?

When it comes to fitness-boosting amino acids, BCAAs seem to get all of the attention. However, two other amino acids deserve some spotlight, too: l-arginine and l-citrulline. Here’s what you need to know about their unique benefits—and which to incorporate into your workout routine.

5 Amino Acids All Gym Lovers Should Know About

5 Amino Acids All Gym Lovers Should Know About

Whether you’re considering adding an amino acid supplement to your fitness routine, don’t know much about the one you’re already taking, or just want to understand the magic that happens inside your muscles—we’ve got all the amino info you need.

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