---
product_id: 899953
title: "Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g"
brand: "vetoquinol"
price: "¥10431"
currency: JPY
in_stock: true
category: "Vetoquinol"
url: https://www.desertcart.jp/products/899953-vetoquinol-viralys-lysine-powder-for-cats-and-kittens-100-g
store_origin: JP
region: Japan
---

# Easy mix oral powder Eye health focus Immune & respiratory boost Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g

**Brand:** vetoquinol
**Price:** ¥10431
**Availability:** ✅ In Stock

## Summary

> 🐾 Keep your cats thriving with Viralys — the daily lysine boost they actually crave!

## Quick Answers

- **What is this?** Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g by vetoquinol
- **How much does it cost?** ¥10431 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/899953-vetoquinol-viralys-lysine-powder-for-cats-and-kittens-100-g)

## 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

- • **Stress-Free Feeding:** Mixes seamlessly into wet food twice daily, ensuring hassle-free administration even for picky eaters.
- • **Targeted Eye Wellness:** Specifically formulated lysine to reduce sticky eye discharge and support healthy ocular function for cats and kittens.
- • **Vet-Recommended Formula:** Backed by veterinary approval and trusted by thousands of cat owners for effective herpes flare-up management.
- • **Premium Quality Ingredients:** Contains 500mg L-Lysine hydrochloride with enzymatic hydrolyzed fish and poultry liver for optimal absorption and palatability.
- • **Daily Immune & Respiratory Support:** Fish & chicken flavored L-Lysine powder that strengthens immune defenses and promotes respiratory health every day.

## Overview

Vetoquinol Viralys is a 100g flavored L-Lysine powder designed to support eye health, immune strength, and respiratory wellness in cats and kittens. With 500mg of active L-Lysine hydrochloride per serving, it helps prevent herpes virus flare-ups by suppressing arginine, promoting healthier, happier pets. Easy to mix into wet food and vet-recommended, Viralys is a trusted daily supplement that reduces costly vet visits and keeps your feline companions feeling their best.

## Description

Buy Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g | Lysine Supplement for Cats and Kittens to Support Eye, Respiratory and Immune Health, Flavored Oral Powder: L-Lysine - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Targeted Eye Health: Primarily to aid against sticky eye discharge, this lysine supplement is specifically formulated to support healthy ocular function and overall eye wellness for cats and kittens of all ages
- Daily Immune Support: Vetoquinol Viralys is a fish and chicken flavored L-Lysine powder for cats of all ages that supports immune strength and respiratory health for everyday pet wellness
- Respiratory Health Supplement: This powder supplement for kittens and cats offers a daily serving of lysine, helping to support normal respiratory health as part of a regular pet wellness routine
- Easy Feeding Oral Powder: This oral powder supplement provides stress-free administration; for best results, mix this pet wellness supplement into cat food twice a day
- Confidence in Every Product: Made with a commitment to transparency, rigorous review, and dependable standards upheld across every product, we create happier and healthier moments for your pet

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000FULBT4 |
| ASIN  | B000FULBT4 |
| Active Ingredients | Active ingredients: L-Lysine hydrochloride, 500mg. Inactive ingredients: Brewer’s Dried Yeast, Hydrolyzed Fish (enzymatic), Hydrolyzed Poultry Liver (enzymatic), Mixed Tocopherols (a preservative), Sodium Acid Pyrophosphate, Sodium Sulfate. |
| Best Sellers Rank | #1,561 in Pet Supplies ( See Top 100 in Pet Supplies ) #3 in Cat Multivitamins |
| Brand Name | Vetoquinol |
| Customer Reviews | 4.6 4.6 out of 5 stars (9,707) |
| Date First Available  | May 25, 2006 |
| Department  | cat-vitamins-supplements |
| Flavor | Flavorless |
| Global Trade Identification Number | 00030521041480 |
| Included Components | Vetoquinol Viralys Powder, 100gm |
| Item Form | Powder |
| Item Highlight | Lysine Supplement for Cats and Kittens to Support Eye, Respiratory and Immune Health, Flavored Oral Powder |
| Item Weight | 0.27 g |
| Item model number  | 410633 |
| Manufacturer | Vetoquinol |
| Manufacturer  | Vetoquinol |
| Manufacturer Part Number | 410633 |
| Model Number | 410633 |
| Number of Items | 1 |
| Product Benefits | Immune Support |
| Product Dimensions  | 4 x 5 x 5 inches; 0.01 ounces |
| Specific Uses For Product | Active |
| Target Species | Cat |
| UPC | 030521041480 884291149927 |
| Unit Count | 2.5 Ounce |
| Volume | 3.5 fluid ounces |

## Product Details

- **Brand:** Vetoquinol
- **Flavor:** Flavorless
- **Item Form:** Powder
- **Item Weight:** 0.27 g

## Images

![Vetoquinol Viralys, Lysine Powder for Cats and Kittens, 100 g - Image 1](https://m.media-amazon.com/images/I/61l0q+Sk6GL.jpg)

## Available Options

This product comes in different **Size** options.

## 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.

## 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 Japan*
*Store origin: JP*
*Last updated: 2026-11-06*