L-Lysine

Suggested Use

Suggested Use: Take 1 capsule two to three times daily or as recommended by your health-care practitioner.

• 

  Thorne Research L-Lysine 60 Capsules

  Thorne4.8(1500)

  $15.00Lowest
• 

  Thorne Research L-Lysine Essential Amino Acid for Skin Health, Energy Production, and Immune Function

  Fitness Outlet4.8(1500)

  $15.00Lowest
• 

  Thorne Lysine

  Integrated Health Products4.8(1500)

  $15.00Lowest
• 

  l carnitine l lysine Thorne Acetyl-L-Carnitine

  Service Pare Brise

  $20.96
• 

  Foundational Stack for Athletes by Thorne | NSF Certified for Sport

  Thorne4.8(31)

  $133.00
• 

  Recovery Stack - Berry by Thorne | NSF Certified for Sport

  Thorne3.0(2)

  $98.00
• 

  Lysine

  RTHM4.8(1500)

  $450.00
• 

  Allergy Research Group L-Lysine 500 mg 100 Capsules

  Allergy Research Group4.7(50)

  $17.19

Enter your city or ZIP code to find supplement & health stores in your area that may carry this product.

Showing representative supplement & health retailers — search above for stores in your area.

• Capitol Nutrition, Supplements & Vitamins Store

  5.0 (208)

  Vitamin & supplements store

  1108 W Lincoln Hwy, Schererville, IN 46375

  Directions(219) 865-1212

• Steger Nutrition Hub

  4.8 (25)

  Health food store

  31 E 34th St, Steger, IL 60475

  Directions(708) 248-6782

• The Vitamin Shoppe

  4.5 (96)

  Vitamin & supplements store

  10343 Indianapolis Blvd Suite 102, Highland, IN 46322

  Directions(219) 924-1789

• GNC

  4.0 (42)

  Vitamin & supplements store

  4854 Lincoln Hwy, Matteson, IL 60443

  Directions(708) 679-3383

• Health Nutz

  5.0 (61)

  Vitamin & supplements store

  19610 LaGrange Rd, Mokena, IL 60448

  Directions(708) 479-7578

• Superior Level Nutrition

  5.0 (68)

  Vitamin & supplements store

  1417 E Lincoln Hwy, New Lenox, IL 60451

  Directions(815) 717-8903

• Capitol Nutrition & Supplements

  4.9 (203)

  Vitamin & supplements store

  7030 W 159th St, Orland Park, IL 60462

  Directions(708) 444-2114

• The Vitamin Shoppe

  4.4 (191)

  Vitamin & supplements store

  1243 Torrence Ave, Calumet City, IL 60409

  Directions(708) 862-3498

• l-Lysine supplementation affects dietary protein quality and growth and serum amino acid concentrations in rats

  CW Xiao, A Hendry, L Kenney, J Bertinato - Scientific Reports, 2023 - nature.com

  … study examined the effects of l-lysine (Lys) supplementation … between the ratio of supplemental Lys to dietary protein (X) … The nutritional safety and health effects of supplemental Lys …

  202328 citations

• Effects of L-lysine and L-arginine on in vitro replication of feline herpesvirus type-1

  DJ Maggs, BK Collins, JG Thorne… - … of Veterinary Research, 2000 - Am Vet Med Assoc

  … By contrast, L-lysine antagonizes the growthpromoting effect of arginine and reduces HSV-1 replication.This is dependent on a high lysine-to-arginine ratio in vitro.Subsequently, clinical …

  200080 citations

• L-lysine dietary supplementation for childhood and adolescent growth: Promises and precautions

  R Gunarathne, X Guan, T Feng, Y Zhao, J Lu - … of Advanced Research, 2025 - Elsevier

  Background L-lysine (lysine) is an essential amino acid that plays a vital role in human nutrition. It serves as a key component in protein synthesis and fulfills critical roles in various …

  202555 citations

• Effect of lysine supplementation on health and morbidity in subjects belonging to poor peri-urban households in Accra, Ghana

  S Ghosh, M Smriga, F Vuvor, D Suri… - … American journal of …, 2010 - academic.oup.com

  … L-Lysine acts like a partial serotonin receptor 4 antagonist and inhibits serotonin-mediated intestinal pathologies and anxiety in rats. Proc Natl Acad Sci USA 2003;100(26):15370–5. 22. …

  201062 citations

• Natural remedies for Herpes simplex

  AR Gaby - Alternative medicine review, 2006 - biogetica.com

  … While Herpes simplex can occur in seemingly healthy people, patients with cancer, acquired … Success of L-lysine therapy in frequently recurrent Herpes simplex infection. Treatment and …

  2006111 citations

• Comprehensive safety assessment of ʟ-lysine supplementation from clinical studies: a systematic review

  K Hayamizu, I Oshima, M Nakano - The Journal of Nutrition, 2020 - Elsevier

  Background: Despite the widespread use of ʟ-lysine in dietary supplements, the safety information pertinent to excessive ʟ-lysine ingestion is limited and, to the best of our knowledge, …

  202028 citations

Data sourced from the U.S. National Institutes of Health, Office of Dietary Supplements Dietary Supplement Label Database (DSLD) · Label entered 2014-07-25. DSLD Label ID: 35458. This information is provided for educational reference only and is not medical advice. Always follow the product label and consult a doctor or pharmacist before use.