Description
Price: $105.54
(as of Oct 15, 2025 06:05:24 UTC – Details)

We use superior science to make smarter formulas like Jarrow Formulas L-Lysine, which is an essential amino acid for protein metabolism, necessary for growth, development, tissue maintenance, and repair. Each capsule contains 500 mg of L-lysine. Essential amino acids cannot be made by the body, and therefore, must come from food or supplementation. 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.
Product Dimensions ‏ : ‎ 10.81 x 8.44 x 5.5 inches; 3.25 Pounds
Item model number ‏ : ‎ LY
Date First Available ‏ : ‎ June 17, 2011
Manufacturer ‏ : ‎ Jarrow Formulas
ASIN ‏ : ‎ B0BT2SCK4Y
Best Sellers Rank: #69,968 in Health & Household (See Top 100 in Health & Household) #86 in L-Lysine Nutritional Supplements
Customer Reviews: 4.7 4.7 out of 5 stars 1,259 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Essential Amino Acid – As an essential amino acid for protein metabolism, L-Lysine cannot be made by the body, and therefore, must come from food or supplementation.
L-Lysine Benefits – L-Lysine is necessary for growth, development, tissue maintenance, and repair.
Suggested Use – Each capsule contains 500 mg of L-lysine. Adults take 1 capsule 1 to 3 times per day, preferably on an empty stomach, or as directed by a qualified healthcare professional.
Superior Science, Smarter Formulas – Informed by strong scientific research, Jarrow Formulas products are carefully crafted to ensure you get the benefit of each and every vitamin, mineral and supplement.

Amazon Seaside Shopper –
Daily Wellness Win: Jarrow Formulas Lyz Supplement is a Game-Changer!
I’m thrilled to give Jarrow Formulas Lyz Supplement a glowing five stars! This product has become a fantastic addition to my daily routine, and I couldn’t be happier with its performance. Packed with high-quality lysozyme, it’s designed to support immune health, and I’ve noticed it’s been a reliable boost for my overall wellness, especially during busy or stressful times.The capsules are easy to swallow and gentle on the stomach, making them perfect for daily use. I love that Jarrow Formulas uses science-backed ingredients, and their commitment to quality shines through in this supplement. Since incorporating it into my routine, I’ve felt more resilient, and it’s reassuring to know I’m supporting my body’s natural defenses with a trusted brand. The compact bottle is also convenient for travel or keeping on my desk for consistent use.I highly recommend Jarrow Formulas Lyz Supplement to anyone looking for a dependable, high-quality supplement for daily immune support. It’s a must-have in my wellness arsenal, and I’m confident it will be for others too. Five stars for a product that delivers!
Kimberley Jonas –
Highly recommended
I am extremely satisfied with this product! The quality is outstanding, and it exceeded my expectations. It works exactly as described, and the packaging was secure. Delivery was fast, and the customer service was great. I would definitely purchase again and recommend it to others.
BusyBee –
Easy to swallow
These are easy-to-swallow capsules! I normally can’t swallow large pills (‘horse’ pills), but these are light and slide down easily! Works great for open soars in the mouth (herpes). No side effects. It’s an amino acid. I’ve tried the powders with Vit C, but don’t care for the taste. Water works with these, but anything thicker, like juice or milk, makes it feel like you’re not swallowing anything at all. I’m a petite size, so 1,000 mg (2 capsules) work for me on a daily basis, if needed. My Dr suggested this based on comments from other patients. When I feel the tingling of a soar (the sign that a soar is coming), I take 3,000 mg every day for 3 days, then back to 1,000 mg for a couple days just to be sure it’s gone. The soar doesn’t start! This is natural, and I believe it’s better than taking a prescribed medication, like Acyclovir.
TeeCee –
Great Immune Support
This lysine works great. No side effects.
pj1007 –
Very good buy for a great supplement
Very good buy! This isn’t a cheap supplement. Capsules aren’t small but coated and easy to swallow. L lysine is an important amino acid and it helps heal my fever blisters and canker sores faster.
Maureen Barber –
High quality; works!
Consistent quality from Jarrow; take this every day; it works!
jenjan –
Good for immune support
We take lysine daily during cold and flu season and haven’t had any illnesses in several years. These capsules are relatively easy to swallow even though they are somewhat large. This company is well rated for excellent products.
Bobby –
been taking awhile on recommendation of our natural doc helps helps assimilate protein
They’re great for our needs
Neethu Lakshman –
I got an expired and it is non returnable
Ashish Rohilla –
At least it should be clearly mentioned that it contains gelatine that is sourced from bovine meatGoes against the religious practice of hindus
Basanti –
Didn’t notice difference