Vetoquinol Enisyl-F Oral Paste for Cats, slide 1 of 1

Vetoquinol Enisyl-F Oral Paste for Cats, 100 mL

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Enisyl-F Oral Paste contains L-Lysine to help manage the symptoms of feline herpes virus, including sneezing, watery eyes and nasal discharge. L-Lysine is an amino acid that has been shown to reduce the severity and duration of feline herpes virus infections.

Key Benefits
  • Convenient dial-a-dose syringe aids in precise dosing and easy administration
  • Highly palatable oral paste that is easily accepted by most cats
  • L-Lysine is an amino acid that has been shown to reduce the severity and duration of feline herpes virus infections
  • Manufactured according to Good Manufacturing Practices (GMP) standards
  • Helps manage the symptoms of feline herpes virus, including sneezing, watery eyes and nasal discharge

HAZARDS TO ANIMALS: Safe use in pregnant animals or animals intended for breeding has not been proven. If animal's condition worsens or does not improve, stop product administration and consult your veterinarian. WARNING: For animal use only. Keep out of the reach of children and animals. In case of accidental overdose, contact a veterinarian immediately.

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  • Item Number
  • Brand
    Vet Solutions
  • Food Form
  • Lifestage
  • Product Form
Nutritional Info

Purified Water, L-Lysine Hydrochloride, Sorbitol, Fish Liver Oil, Xanthan Gum, Soya Oil, Tuna Flavor, Soya Lecithin, Silica Aerogel, Caramel Color, Potassium Sorbate, Citric Acid.

Feeding Instructions

For cats 6 months and older, give 2 pumps (2ml) twice daily or as directed by a veterinarian.

Administer orally. Enisyl - F® is extremely tasty and is easily accepted by most cats. It can be applied directly in the mouth, on the nose or on the paws where it can be licked off. Alternatively, you may mix and offer at meal time. Replace the cap securely on the tip of the pump after each use. Each press of the pump delivers 1ml (1 g) of paste.

Store in a cool, dry place.

Trusted Immune System Support

Adding L-lysine as a supplement to your cat's diet is an easy way to help support her long-term health. As a market leader with a wide range of L-lysine products, Vetoquinol puts this active ingredient in tasty chews and bite-size morsels, plus paste, gel and powder form so you can find the best way to offer it to your kitty. These supplements are specifically designed for felines to support the immune system, and maintain respiratory and eye health.

Trusted Immune System Support


Specially formulated Enisyl-F was the first lysine-based nutritional supplement developed for veterinary use for kitties. It helps support normal respiratory health, helps maintain normal eye function and health, and is recommended for immune system support and conditions responsive to L-lysine. Choose from three formulas, including chewy treats, bites and an oral paste.



Veterinarian formulated to deliver just the right dose in a treat with cheese, chicken, liver and hickory smoke flavors.



Tiny mouthfuls of L-lysine disguised as a delicious snack with savory chicken fat and chicken liver.

oral paste

oral paste

Highly palatable paste that can be given by mouth, mixed with food, or even applied to paws for your cat to lick off.


Supplementing with L-lysine is helpful for managing the symptoms of upper respiratory infections in kittens and cats that were strays, and those in shelters. For a highly palatable source of L-lysine HCl, try one of the Viralys formulations, made to support a healthy immune system and conditions that are responsive to L-lysine.

oral powder

oral powder

Delivers L-lysine HCl in a powder with fish and poultry liver flavors that cats crave—just sprinkle it on top of food.

oral gel

oral gel

Cats only need a small amount of this extremely palatable gel to get the benefits of L-lysine HCl.

Seal of Quality

Out of thousands of animal supplement companies, only a hundred are audited NASC members, including Vetoquinol. That means they've undergone a comprehensive quality audit to earn the NASC Quality Seal. Displaying this seal on their products means that you can rest assured that they are committed to following the highest current standards of quality in the industry.

Seal of Quality
About Vetoquinol

About Vetoquinol

Vetoquinol is a family-owned company devoted exclusively to finding innovative solutions for animal health issues. They've shown more than 80 years of dedication, researching everything from oral hygiene to urinary and kidney health to create products that are effective and safe for the pets you love and care about. Founded in 1933 with an expertise in pet pain management and veterinary resources, Vetoquinol has gained the continued trust of pet parents and vets worldwide.

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