---
product_id: 721793768
title: "Vetoquinol Viralys L-Lysine Supplement for Cats - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Flavored Lysine Powder"
brand: "vetoquinol"
price: "₩139162"
currency: KRW
in_stock: true
reviews_count: 5
category: "Vetoquinol"
url: https://www.desertcart.kr/products/721793768-vetoquinol-viralys-l-lysine-supplement-for-cats-cats-and-kittens
store_origin: KR
region: South Korea
---

# Supports cats & kittens all ages 500mg lysine per dose Vet-recommended immune boost Vetoquinol Viralys L-Lysine Supplement for Cats - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Flavored Lysine Powder

**Brand:** vetoquinol
**Price:** ₩139162
**Availability:** ✅ In Stock

## Summary

> 🐾 Keep your cat thriving with Viralys — because every whisker deserves the best!

## Quick Answers

- **What is this?** Vetoquinol Viralys L-Lysine Supplement for Cats - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Flavored Lysine Powder by vetoquinol
- **How much does it cost?** ₩139162 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/721793768-vetoquinol-viralys-l-lysine-supplement-for-cats-cats-and-kittens)

## Best For

- vetoquinol enthusiasts

## Why This Product

- Trusted vetoquinol brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Age Formula:** Safe and effective for kittens through senior cats, ensuring lifelong wellness.
- • **Vet-Trusted & Safe:** Recommended by veterinarians with no known side effects or drug interactions.
- • **Clinically Proven Immune Support:** L-Lysine reduces herpesvirus symptoms & viral shedding for healthier cats.
- • **Easy-to-Administer Flavored Powder:** Fish & poultry flavors make daily dosing a stress-free ritual.
- • **Dual-Action Respiratory & Eye Health:** Targets sneezing, runny nose, watery eyes, and squinting for visible relief.

## Overview

Vetoquinol Viralys L-Lysine Powder delivers a veterinarian-recommended 500mg dose of lysine twice daily to cats and kittens of all ages. This clinically supported supplement helps reduce the clinical signs and viral shedding of feline herpesvirus type-1 (FHV-1), a leading cause of respiratory and eye issues in cats. Trusted by vets and loved by pet parents, Viralys supports immune, ocular, and respiratory health with a palatable fish & poultry flavor, making it an essential daily defense for your feline companion.

## Description

Viralys Powder is a powerful L-Lysine supplement that has been proven to decrease the clinical signs of infection and reduce viral shedding of herpesvirus type-1 (FHV-1), a common cause of respiratory and eye problems in cats. This palatable powder is easy to administer.Viralys Powder supplement is specifically developed for cats and kittens to reduce clinical signs and viral shedding. Viralys Powder contains a naturally occurring form of L-Lysine specifically developed for cats and kittens. L-Lysine competes with arginine, an amino acid essential to the development of the herpesvirus, interfering with the virus's ability to replicate and consequently reducing the viral load.Viralys Powder Features:Excellent safety profile with no known side effects Compatible with other therapies L-lysine supplements lessen the clinical signs of infection and reduce viral shedding. L-Lysine has been shown to:Lessen the clinical signs of FHV-1 Reduce viral shedding in the face of stressors known to induce viral reactivation Reduce the frequency of flare up Feline herpesvirus type-1 (FHV-1) is one of the most common causes of respiratory infections and eye problems in cats. In fact, up to 97% of cats have serological evidence of exposure to FHV-1. Following recovery from primary infection, up to 80% of cats become carriers. Even though carriers can remain asymptomatic for long periods of time, they continue to harbor the virus in nerve cells and can pass it on to uninfected cats, especially during times of stress.

Review: Excellent produit.
Review: This is very good tonic for cats

## Features

- Daily L-Lysine Supplement - Viralys Lysine for cats helps support a strong immune system and can help support eye and respiratory health in cats and kittens of all ages
- Supports Feline Health Issues - Vetoquinol Lysine for Cats can help manage common feline health issues and provides support to help a cat's immune system, ocular health, and respiratory health
- L-Lysine for Cats - Viralys L-Lysine for cats and kittens provides specially formulated immune support for as long as needed to help manage conditions responsive to lysine
- Vet Recommended - Trusted by veterinarians, Viralys L-Lysine Powder provides a safe and reliable solution for supporting your cat's immune and respiratory systems.
- 500mg of Lysine - Viralys Powder delivers the veterinarian-recommended amount of lysine for cats at 500mg 2x daily, and kittens at 250mg

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FULBT4 |
| Batteries Included | No |
| Best Sellers Rank | #2,668 in Pet Supplies ( See Top 100 in Pet Supplies ) #62 in Cat Health Supplies |
| Breed Recommendation | All Breed Sizes |
| Color | Premium pack |
| Customer Reviews | 4.6 4.6 out of 5 stars (8,455) |
| Date First Available | 26 February 2019 |
| Flavor | Fish & Poultry |
| Item Form | Powder |
| Item Weight | 0.28 g |
| Item model number | 410633 |
| Number of Items | 1 |
| Pet Life Stage | all ages |
| Pet Type | Cat, Kitten |
| Product Dimensions | 10.16 x 12.7 x 12.7 cm; 0.28 g |
| Quantity | 1 |
| Size | 100 Grams |
| Specific Uses | Eyes, Sneezing |
| Storage Information | Store at a controlled room temperature. |
| Volume | 3.5 Fluid Ounces |
| batteries required | No |

## Product Details

- **Brand:** Vetoquinol
- **Flavour:** Fish & Poultry
- **Item form:** Powder
- **Item weight:** 0.01 Ounces

## Images

![Vetoquinol Viralys L-Lysine Supplement for Cats - Cats & Kittens of All Ages - Immune Health - Sneezing, Runny Nose, Squinting, Watery Eyes - Flavored Lysine Powder - Image 1](https://m.media-amazon.com/images/I/71IiAj4UUCL.jpg)

## Questions & Answers

**Q: How much lysine in a "scoop" dose? How many doses in a 100 gram jar?**
A: Hi, according to what it says on the jar, "contains approximately 500 mg of L-Lysine Hydrochloride in a palatable base"  I'm not sure about how many doses in a 100 gram jar (it doesn't say on the jar). I only use it occasionally, so it lasts a really long time for me. They suggest one rounded scoop twice daily. I usually just use one scoop at night in their wet food and it seems to work well enough. The scoop is small, I would guess maybe around 1/8 teaspoon? A very good product at any rate and my cats seem to love the taste and will eat it when mixed in with their wet food. Hope this helps.

**Q: What are the ingredients in Vetoquinol Viralys Powder?**
A: I want to let people who are giving this product to their cats, what hydrolyzed food ingredients are.  Hydrolysis is basically chemical digestion.  The protein, in this case fish & liver, is boiled in sulfuric aced for anywhere from several hours to more than a day to break down the proteins.  Then lye is added to raise the ph back to neutral.  Just what I want to give my cats.  Or not!!!  This is the trouble with buying from the internet.  The full label is usually not available & even when it is, the print is usually so tiny, not to mention blurred,  as to be impossible to read.

**Q: What is the shelf life?**
A: If you buy it from us. To_Your_Health, you will be guaranteed to get the freshest products available.  As of today, December 28, 2015, the expiration date on the containers in stock should be December 2017 or better.  Thanks.

**Q: My cat won't eat wet food & only treats that R crunchy on outside & soft inside. Which might be best chance I have ?**
A: The same maker of the this powdered form of L-lysine also makes this supplement is the form of a crunchy treat and a flavored paste (no affiliation). I recommend (as a vet) 500 mg twice daily to begin with, you can titrate up or down to the most effective dose, but always follow the recommendation of your veterinarian. Also note that l-lysine is most effective against the respiratory/ocular symptoms caused by feline herpes virus, a viral (but not venereal) disease most cats have been exposed to and, just like love, herpes virus lasts forever. The amino acid L-lysine is believed to inhibit the recrudescence of the virus during periods of physiologic stress.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by D***E on 23 October 2025*

Excellent produit.

### ⭐⭐⭐⭐⭐ Review
*by J***A on 14 November 2025*

This is very good tonic for cats

### ⭐⭐⭐⭐⭐ Review
*by L***H on 16 December 2025*

I've had my car on this Lysine for years now and it truly keeps keep his feline herpes flare ups at bay. Even if he has a flare up this keeps them from getting out of control. I keep our other cat on it as well to protect her from his virus and she's free of it. I believe this really helps boost both their immune systems. Our vet originally told us about it and I was so happy to find it on here. Both our cats love the flavor and it smells just like fish - very important as cats depend heavily on their sense of smell for eating. It's super easy to mix in with their wet food and comes with a little scooper inside.

## Frequently Bought Together

- Vetoquinol Viralys Daily L-Lysine Powder for Cats and Kittens, Fish Flavored Lysine Supplement for Cats and Kittens to Support Immune Health, Normal Eye Function and Respiratory Health, 100gm
- Purina Pro Plan Veterinary Supplements FortiFlora Cat Probiotic Supplement for Cats with Diarrhea - 30 ct. Box
- Vetoquinol Viralys Daily L-Lysine Gel for Cats and Kittens, Maple Flavored Lysine Supplement for Cats and Kittens to Support Immune Health, Normal Eye Function and Respiratory Health, 5oz

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-27*