Strawfield Pets l-lysine cat supplements contain 100% pure and natural ingredients that are 100% made in the USA only. We are a family owned and veteran owned company who's mission is to create the highest quality pet pro...

Buy Now From Amazon

Product Review

Strawfield Pets l-lysine cat supplements contain 100% pure and natural ingredients that are 100% made in the USA only. We are a family owned and veteran owned company who's mission is to create the highest quality pet products with the most natural ingredients possible so your pet can live a longer healthier life. 

Our l lysine powder for cats contains 900 milligrams of pure lysine hydrochloride per scoop and each jar contains 200 scoops so you can get 2x more lysine per scoop than other brands. It helps treat & prevent eye infections, herpesvirus, FVR, FVH-1, feline herpes, upper respiratory infections, coughing, cat colds, sneezing, and congestion while boosting the immune system & improving pet health. 

Safe as a cat vitamin or kitten vitamins and can be sprinkled over food once per day in the am or pm. Naturally flavored with chicken liver to please the pickiest of feline palates. Crafted in a federally regulated and inspected facility where each batch is tested for safety and quality following NASC and cGMP guidelines. 



  • Cat Immune Support Supplement - L-Lysine cat supplement works as a pet immune system booster without the use of cat meds or antibiotics; helps support cats with feline herpes virus (FHV), cat colds, sinus congestion, sneezing, snotty runny nose & itchy watery eyes
  • Easy to Serve: The granules are easy to scoop from the jar and sprinkle over food and mixed in; very simple for pets who have trouble chewing or special care needs
  • L-Lysine Granules - Our L-Lysine Immune Support Supplement for Cats is in a granule form. It is not a powder form of L-lysine; a natural upper respiratory support supplement safe for kittens 4 months and older, adults & elderly senior cats of all breeds
  • FHV Support: L-Lysine is an essential amino acid for cats and is thought by veterinarians to help limit the viral shedding of FHV through natural processes of the body
  • High Quality Production: Made in the USA in a GMP-certified facility with zero soy, wheat, corn, sugar, artificial sweeteners, artificial dyes, or artificial flavors; just clean, human-grade ingredients

Similar Products

Tomlyn Immune Support L-Lysine Supplement Powder for Cats, 100gVetriScience Laboratories - Vetri Lysine Plus, 120 Bite-Sized ChewsHomeoPet Feline Nose Relief, One SizeVetoquinol Viralys L-Lysine Supplement for Cats, 3.5oz/100g - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Palatable Fish & Poultry Flavor Lysine PowderL-Lysine Chews for Cats, Immune and Respiratory Support Supplement, 60 Bite Sized Chews (3.74oz)Vetoquinol Viralys Gel L-Lysine Supplement for Cats, 5oz - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Palatable Maple Flavor Lysine GelL Lysine for Cats Immune Viralys Support Oral Granule Powder - 500 mg per serving ( 4oz) - Cats & Kittens, Immune Health, Sneezing, Runny Nose,Squinting Palatable Fish & Poultry Flavor L Lysine PowderIn Clover Spry Daily Respiratory and Ocular Support Soft Chews for Cats, with L-Lysine, Superfoods, and Prebiotics for a Strong Immune System, 2.1 oz. (60 count)HomeoPet Nose Relief, 15 ml