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Felisyl L-Lysine for Cats Immune System Support are a specially formulated dietary supplement designed to boost the immune system of your feline companion. These soft chews contain essential L-Lysine, an amino acid that plays a crucial role in supporting your cat's immune response.


Key Benefits:

  1. Immune System Support: L-Lysine is known for its immune-boosting properties, helping to strengthen your cat's natural defense mechanisms against common illnesses and infections.
  2. Respiratory Health: Felisyl L-Lysine helps maintain respiratory health in cats by reducing the severity and duration of respiratory symptoms associated with viral infections, such as sneezing, coughing, and congestion.
  3. Stress Relief: These soft chews can also help alleviate stress-related issues in cats, as stress can weaken the immune system. By providing L-Lysine supplementation, Felisyl promotes a healthier response to stress, ensuring your cat remains resilient and less susceptible to illnesses.
  4. Tasty and Convenient: The soft chews are not only beneficial but also palatable, making them easy to administer. Cats will enjoy the delicious taste, making it hassle-free to incorporate this supplement into their daily routine.
  5. Trusted Quality: Felisyl L-Lysine soft chews are formulated by veterinarians and made with high-quality ingredients, ensuring the safety and effectiveness of the product. They are a reliable choice to support your cat's immune system and overall well-being.


Give your feline friend the immune system support they need with Felisyl L-Lysine for Cats Immune System Support Soft Chews, providing a convenient and tasty solution to boost their health and vitality.

    Felisyl L-Lysine for Cats Immune System Support

    $14.99 Regular Price
    $13.49Sale Price
    Price Options
    One-time purchase
    1 Month
    Save 15% off the regular purchase price
    $11.47every month until canceled
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    Save 10% off the regular purchase price
    $12.14every 2 months until canceled
    3 Month
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    $12.14every 3 months until canceled
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    $12.14every 6 months until canceled
    • Administration: For Felisyl Soft Chews

      Feed soft chew directly to cat or crumble over food.

      Give 1-2 chews daily


      Administration: For Felisyl Granules

      Sprinkle measured amount over cat's food and mix in. 

      Age of Cat Morning Evening
      Under 6 Months 1/2 Scoop 1/2 Scoop
      Over 6 Months 1 Scoop 1 Scoop


      Administration: For Felisyl Gel

      Administer Orally. Place a small amount on cat's nose to stimulate taste interest. Once interest has been established, a syringe or teaspoon may be used. Can also apply gel directly on cat's paw and allow cat to lick off.

      • For Kittens under 6 month of age: 1/4 teaspoon twice daily.
      • For Cats 6 months or older: 1/2 teaspoon twice daily
      • Or use as directed by your veterinarian.

      Allow 3-4 weeks for best results. This product is intended for intermittent or supplemental feeding only. Individual results may vary. For animal use only. Do not use if product appears to be tampered with or seal is broke. Store product in cool, dry place. Avoid temperatures above 86°F.



    • Ingredients: Felisyl Soft Chews

      Guaranteed Analysis per Chew (1.5g):
      Moisture (max) 18.6%
      L-Lysine 250 mg


      l-lysine, natural chicken liver flavor, oat flour, rye four, soy lecithin, brewers dried yeast, water, arabic gum, glycerin, canola oil, maltodextrin, sodium alginate, calcium sulfate, citrus pectin, oat meal, sorbic acid (a preservative), propionic acid (a preservative), mixed tocopherols (a preservative).


      Ingredients: Felisyl Granules

      Guaranteed Analysis (Per 1cc Scoop):
      L-Lysine HCI 250 mg


      L-Lysine in a palatable base


      Ingredients: Felisyl Gel

      Guaranteed Analysis per teaspoon (6G):

      All quantities are minimum unless stated otherwise.

      Crude Protein 4.52%
      Crude Protein (max.) <0.75%
      Crude Fat 19.54%
      Moisture (max.) 74.27%


      Calorie Content (calculated): 2,000 kcal/kg (12 kcal/teaspoon)



      Water, L-Lysine Monohydrochloride, Stearic Acid, Soybean Oil, Cetyl Alcohol, Lecithin, Salmon flavor, Methylparaben (Preservative), Potassium Sorbate (Preservative), Sodium Benzoate (Preservative), Carboxymethylcellulose, Ascorbic Acid, Xantham Gum.

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