Lysine 400™

A natural, 100% pure essential amino acid to support your immune system. L-Lysine also plays an important role in energy production as well as in the production of collagen, which is essential for healthy bones, joints and connective tissue.

 26 reviews  |  Write review

MSRP $17.90
SAVE $3.00



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Product Information


Andrew Lessman's Lysine-400 is a pure, natural source of the essential amino acid L-Lysine. Lysine has become a very popular supplement, because of its role in supporting the immune system, as well as its central role in fat burning and energy metabolism. Lysine is one of nine amino acids referred to as “essential” because it cannot be produced by the body. Lysine is vital for the growth and development of body tissues and also plays a critical role in the body's production of energy, since it is a precursor to acetyl CoA, a critical component of all energy metabolism. Additionally, Lysine is also a precursor to Carnitine, which is essential for all fat metabolism. Lysine also plays an important structural role in the formation of collagen, a vital component of healthy skin, bones, joints and connective tissue (tendons, ligaments and cartilage). Lysine also plays a role in helping the body manage Calcium. In short, Lysine plays a multitude of critical roles in the most vital systems in our body. 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.


Serving Size
1 Capsule
Amount Per Serving
L-Lysine (as L-lysine hydrochloride)
400 mg
* Percent Daily Values (%DV) are based on a 2,000 calorie diet. † Daily Value not established
Other Ingredients: Gelatin capsule.

Suggested Use

Consume one or more capsules daily or as recommended by your physician. As with any dietary supplement, this product is most effective as part of a healthy diet and active lifestyle, along with a daily multi-vitamin-mineral formula.

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Customer Reviews

Based on 26 reviews


It works, Joy Barton I only trust Andrew Lessman as the man to get my supplements from. Why???? BECAUSE THEY WORK!
By Amazon, NV on 3/28/2022

It works great for cold sores, Joy Barton only trust Andrew Lessman as the man to get my supplements from. Why???? BECAUSE THEY WORK!
By Amazon, NV on 3/28/2022

For me..they work, Amazon Customer Lysine boosts your immune system. I very seldom get colds or cold sores anymore. And allergies are far less bothersome.
By Amazon, NV on 3/15/2022

A trusted source and product, OG I have been taking this for maybe 4 years now. As a prevention supplement. This is the first time i get it from Amazon. Timely delivery, great product and trusted brand.
By Amazon, NV on 6/6/2021