Life Extension L-Lysine capsules are a high-dose, vegetarian-friendly lysine supplement, delivering 620 mg of L-Lysine per capsule, an essential amino acid that supports overall health that cannot be naturally produced by the body.
Lysine is an amino acid critical for growth and promotion of nitrogen balance in the body. L-Lysine serves as a foundational component for protein synthesis and essential for collagen formation.1 Since the human body cannot produce lysine on its own, it must be obtained through dietary sources; rich sources of lysine include meat, fish, dairy products, eggs, and some legumes or by taking lysine supplements.
Benefits of L-Lysine supplements:
- Provide essential amino acid support
- Healthy nitrogen balance
- Promote a healthy stress response for overall well-being 2
- Enhance calcium absorption and help retain calcium in the body, which is crucial for bone health 3
- Is commonly used for preventing and treating cold sores
- Each capsule provides 620mg free form lysine
- Suitable for Vegetarians and gluten-free
Directions: As a food supplement, take 1 to 3 lysine capsules daily on an empty stomach, or as recommended by a healthcare practitioner.
Do not exceed the stated dosage. If you are undergoing treatment for a medical condition or if you are pregnant or lactating, please consult with your medical practitioner first. A food supplement should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Store tightly closed in a cool and dry place. Keep out of sight and reach of children.
One capsule delivers 620mg of L-Lysine (as L-Lysine HCl). Other ingredients: vegetable cellulose (capsule), vegetable stearate.
Is the L-Lysine content vegetarian or just the outside capsule?
There are no animal or animal-derived ingredients in this formula. This product would be considered vegetarian.
Is L-Lysine free form?
Yes, this lysine supplement provides free form lysine.
Is Life Extension L-lysine gluten free?
Yes, L-lysine does not contain any gluten.
Can I empty the contents of a pill capsule into something if I cannot swallow the capsule whole?
You can, and it is still possible that you derive benefits from the nutrients. However, the product was not designed for ingestion in this manner. Also, some may find the taste slightly bitter or objectionable because the product is very potent.
Are any of the ingredients corn-derived?
Life Extension L-lysine does not contain any corn or corn-derived ingredients.
Is it safe to take L-lysine while breastfeeding?
Life Extension do not test their products on pregnant or breastfeeding women, so you are encouraged to follow up with your healthcare provider to discuss the information and use of this supplement before beginning a regimen.
Is Life Extension L-lysine organic?
No, the l-lysine is not organically sourced. However, all Life Extension raw materials are checked for herbicide and pesticide levels prior to use in a product. They must meet the strict requirements set forth by USP for Life Extenion to use them in their products.
- Essential Amino Acids: Definition, Benefits, and Food Sources; Medically reviewed by Kathy W. Warwick, RDN, CDCES, Nutrition — Written by Jillian Kubala, MS, RD — Updated on August 7, 2023
- Smriga M, Torii K. L-Lysine acts like a partial serotonin receptor 4 antagonist and inhibits serotonin-mediated intestinal pathologies and anxiety in rats. Proc Natl Acad Sci U S A. 2003 Dec 23;100(26):15370-5. doi: 10.1073/pnas.2436556100. Epub 2003 Dec 15. PMID: 14676321; PMCID: PMC307574.
- Lv Z, Shi W, Zhang Q. Role of Essential Amino Acids in Age-Induced Bone Loss. Int J Mol Sci. 2022 Sep 24;23(19):11281. doi: 10.3390/ijms231911281. PMID: 36232583; PMCID: PMC9569615.
Food supplements should not be used as a substitute for a varied diet. Store in a cool, dry place away from direct sunlight. Keep out of reach of young children. Do not exceed the daily dose. If pregnant, or breastfeeding, or if you are taking medication, or on medical care, consult your physician prior to use. While we work to ensure that product information on our website is correct, on occasion manufacturers may alter their ingredient lists. Actual product packaging and materials may contain more and/or different information than that shown on our website. All information about the products on our website is provided for information purposes only. We recommend that you do not solely rely on the information presented on our website. Please always read the labels, warnings, and directions provided with the product before using or consuming a product. In the event of any safety concerns or for any other information about a product please carefully read any instructions provided on the label or packaging and contact the manufacturer. Content on this site is not intended to substitute for advice given by medical practitioner, pharmacist, or other licensed health-care professional. Contact your health-care provider immediately if you suspect that you have a medical problem. Information and statements about products are not intended to be used to diagnose, treat, cure, or prevent any disease or health condition. The customer reviews are only moderated for offensive content – they should not be regarded as medical or health advice; no reliance should therefore be placed on them; and they are not endorsed by Victoria Health. If you have any health problems or questions regarding the suitability of any product please contact a health professional. Products are not medicinal unless otherwise stated. Victoria Health accepts no liability for inaccuracies or misstatements about products by manufacturers or other third parties. This does not affect your statutory rights.
