Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Advertising Disclosure
10 Best lysine chews of 2025
Save up to 10% off
Best Choice1
VetoquinolVetoquinol Enisyl-F Lysine Bites: L-Lysine Chews for Cats & Kittens - Chicken Liver-Flavor, 6.4oz (180g) Recloseable Bag
9.8Exceptional
Our Rating
-
-
Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
Careful review Our team ensures quality, value, and fit based on real user feedback
Trusted insights AI and human analysis guide your decisions, reflecting real user prioritiesReal users impact
Thousands of users trust our site daily
- Based on millions of stores and reviews
- Shoppers influence our rankings
Analyzing top stores
Value for Money2
VETRISCIENCEVetriScience Extra Strength Lysine Immunity Health Chews - Immunity Supplement for Cats of All Ages - Supports Immune Function, Eye Health & Cardiovascular Function - 120 Count
9.5Excellent
Our Rating
-
3
VETRISCIENCEVetriScience Lysine Immunity Health Chews, 250 mg Lysine Plus Immune Supplement for Cats and Kittens with Allergies, Sneezing, Runny Nose and Watery Eyes, Chicken, 90 Count
Key specs-
Immune Support:Recommended for cats
-
Respiratory Health:Supports respiratory health
-
Lysine:Essential amino acid
-
Convenient Format:Bite sized chew
-
Natural Ingredients:Chicken Liver chew
9.4Excellent
Our Rating
-
4
OptixCareOptixcare 72-2 L-Lysine Chews for Cats & Kittens, 60 Count (Pack of 1)
9.3Excellent
Our Rating
-
5
Country LifeCountry Life Chewable L-Lysine Supplement with Vitamin D and Elderberry, Immune Support and Collagen Renewal for Skin Tissue, Ideal for Adults
9.0Excellent
Our Rating
-
-
See Today’s Deals & Prices
6
Pet NaturalsPet Naturals Lysine for Cats, Chicken Flavor, 60 Chews - Immune and Respiratory Support for Cats - No Wheat or Corn - Vet Recommended
Key specs-
Immune Support:Supports immune system
-
Respiratory Health:Supports upper respiratory health
-
Lysine:250mg per treat
-
Convenient Format:Soft chew
-
Natural Ingredients:No wheat, corn, artificial
8.9Very Good
Our Rating
-
7
TOMLYNTomlyn Immune Support Daily L-Lysine Supplement, Fish-Flavored Lysine Chews for Cats and Kittens, 30ct
Key specs-
Function:Supports normal eye function
-
Form:Chews
-
Age Range:Cats and kittens
-
Ingredients:L-Lysine
-
Health Benefits:Immune support, respiratory health
8.7Very Good
Our Rating
-
8
Well&WholeL-Lysine Gummies 1000mg - L-Lysine Supplements for Kids and Adults - Lip and Cold Sore* Support for Women - Chewable Lysine Gummies with Vitamin B12 - Vegan, Non GMO, Gluten-Free, 60 Counts
10% Off8.6Very Good
-
9
Pet HonestyCat Immune Support Lysine - Cat Allergy Relief - Sneezing, Runny Nose, Watery Eyes - Cat Supplements & Vitamins with Omega 3s, L-Lysine, Antioxidants, Colostrum - Chicken (30 Day Supply)
Key specs-
Immune Support:Contains colostrum, quercetin
-
Respiratory Health:Supports respiratory health
-
Lysine:Essential amino acid
-
Convenient Format:Chews, crunchy outside
-
Natural Ingredients:No artificial preservatives
8.3Good
Our Rating
-
10
Balanced BreedBalanced Breed L-Lysine Cats Immune Support Soft Chews Made in USA Vet-Pharmacist Approved Seasonal Allergy Relief Cat Vitamins Indoor Cats Supplements Krill Oil Asthma Relief Cat Lysine Treats NonGMO
Key specs-
Immune Support:Cat immune booster
-
Respiratory Health:Cat respiratory support
-
Lysine:Cat lysine treats
-
Convenient Format:Lysine cat treats
-
Natural Ingredients:Natural lysine cat treats
8.2Good
Our Rating
-
