Rated 4.8/5 by 1000+ devoted cat parents

KittySupps™ L-Lysine Supplement

done_outline Supports Immune Function

done_outline Promotes Respiratory Health

done_outline Helps Maintain Clear Eyes

done_outline Essential Amino Acid

done_outline Mixes Into Any Food (Wet, Dry Or Raw)

done_outline Third Party Tested & Certified

Only 8 Left in stock

Pure L-Lysine Supplement for Cats - With Added Immune-Supporting Vitamins | Chicken Flavored Powder with Precision Dosing Spoons | 100g

Is Your Cat Struggling with Respiratory Issues or Stress-Related Flare-Ups?

Up to 97% of cats show evidence of exposure to feline herpesvirus (FHV-1) at some point in their lives. Once infected, cats carry the virus forever—and stress, illness, or a weakened immune system can trigger flare-ups at any time. Sneezing, watery eyes, nasal congestion, and eye discharge are common signs that your cat's system needs support.

Why L-Lysine for Cats?

L-Lysine is an essential amino acid that cats cannot produce on their own—they must get it from their diet. While many veterinarians have traditionally recommended lysine supplementation to support cats dealing with respiratory challenges, the most important thing is giving your cat's immune system every advantage during times of stress.

  • Immune System Support: Helps support normal immune function and antibody production
  • Respiratory Comfort: May help support normal respiratory health during seasonal challenges or stressful situations
  • Eye & Nasal Health: Supports overall comfort during periods of ocular and nasal irritation
  • Stress Response: Particularly helpful during stressful events like boarding, vet visits, new pets, or household changes

Especially Helpful For:

  • Cats with a history of upper respiratory issues
  • Multi-cat households where stress and exposure are common
  • Shelter or rescue cats transitioning to new homes
  • Senior cats or kittens with developing immune systems
  • Any cat during stressful life changes

What Makes Our Formula Different:

  • Enhanced Formula: Pure L-Lysine plus Vitamin C, B6, B12, and A for comprehensive immune support
  • Contains Cysteine & Arginine: Additional amino acids to support overall health
  • Chicken-Flavored Powder: Cats love the taste—mixes easily with wet or dry food
  • Precision Dosing Spoons Included: 1g and 5g spoons for accurate, hassle-free dosing
  • No Guesswork: Clear dosing guidelines based on your cat's age

Easy Daily Routine: Simply add to your cat's wet or dry food once or twice daily. The chicken flavor makes it palatable for even picky eaters. Most cats don't notice it's there.

Dosing Guidelines:

  • Kittens (2-3 months): 1g per dose, twice daily
  • Cats (3+ months): 2g per dose, twice daily
  • Adjust as needed based on your cat's response

Guaranteed Analysis (per kilogram):

  • Lysine: ≥10%
  • Cystine: ≥2%
  • Arginine: ≥2%
  • Vitamin B6: 1,200mg
  • Vitamin A: 1,000mg
  • Vitamin B12: 1,200mg
  • Vitamin C: 1,500mg
  • Moisture: ≤10%

Support Their System Before Problems Start: Cats with a history of respiratory issues often flare up during times of stress. Rather than waiting for symptoms to appear, proactive supplementation helps keep their immune system ready for whatever comes their way.

Product Details:

  • Net Weight: 100g (3.52 oz)
  • Form: Flavored powder (Fructose & Chicken Powder base)
  • Includes: 1g and 5g precision dosing spoons
  • Storage: Room temperature, keep sealed
  • Precautions: Not for use in ruminants

We’re so confident your kitty will be happier and more energetic, all of our products are backed by a 90 day money back guarantee.

If you’re not 100% satisfied with our product, simply contact our team and we’ll refund your entire order.

Or if something isn't right, contact us and we'll deal with it for no additional charge.

KittySupps™ L-Lysine Supplement

KittySupps™ L-Lysine Supplement

 4.8/5
$49.95
$49.95 $90.00
SAVE 44% Sold out

  • "Every vet visit used to trigger a week of sneezing and watery eyes. Since starting KittySupps L-Lysine, she handles stress like a champ. No flare-ups."

    Margaret G. - Verified Buyer

  • "I thought my cat’s food covered taurine, but Kittysupps proved me wrong. More energy and shinier coat in weeks."

    Agnes W. - Verified Buyer

  • "I was scared to give too much, but it’s water-soluble and safe. The scoop makes it foolproof."

    Helen M. - Verified Buyer
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    • Dr. Anna Stump

      "I recommend KittySupps supplements to every cat owner whose pet is on commercial food. The precision dosing spoon takes the guesswork out, and the quality gives me confidence I'm not sending clients home with contaminated or degraded product."

      DVM and Vet Consultant to KittySupps

    • Dr. Victoria Whitfield

      "I started using KittySupps with my senior cat after his heart murmur diagnosis. The purity, the proper dosing, and how easily it mixes into his food made it a no-brainer. Now I recommend it to any client whose cat is on commercial food, which is almost everyone."

      DVM and Vet Consultant to KittySupps

    • Dr. Sienna Rose

      "In my 9 years of practice, I've seen what taurine deficiency can do, the cardiac issues, the vision problems, the lethargy that owners mistake for aging. KittySupps is the only supplement I've found that delivers what it promises. I trust it for my patients and my own two rescues at home."

      DVM and Vet Consultant to KittySupps

       
       

      Results

      92%

      Noticed fewer respiratory flare-ups and clearer breathing within the first 30 days.

      88%

      Reported visible improvements in eye clarity and reduced discharge after consistent use.

      96%

      Said they feel peace of mind knowing their cat's immune system is supported every day.

      *Based on a feedback from 8000+ customers who used KittySupps L-Lysine Supplement for at least 60 days.

       
       

      Daily L-Lysine Made Simple

      Just one scoop of KittySupps L-Lysine mixed into your cat's food provides essential immune support their body needs daily. Perfect for cats prone to stress, respiratory flare-ups, or those with a history of eye and nasal irritation.

      • Supports healthy immune function and respiratory comfort
      • Chicken-flavored and easy to mix in food
      • Safe for daily use, no risk of over-supplementing
      • Lab-tested, pure L-Lysine with included dosing spoons

      Give your cat immune support in 10 seconds a day, and enjoy the peace of mind that comes with knowing you're protecting them before the next flare-up hits.