---
product_id: 49522471
title: "L-Lysine Gel for Cats & Kittens (5oz) – Immune System, Respiratory & Eye Health Support. Reduces Sneezing, Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement – Made in USA (1 Pack)"
brand: "felisyl"
price: "฿2345"
currency: THB
in_stock: true
reviews_count: 4
category: "Felisyl"
url: https://www.desertcart.co.th/products/49522471-l-lysine-gel-for-cats-and-kittens-5oz-immune-system
store_origin: TH
region: Thailand
---

# Salmon-flavored gel for easy dosing 1000mg L-Lysine per serving NASC-certified, made in USA quality L-Lysine Gel for Cats & Kittens (5oz) – Immune System, Respiratory & Eye Health Support. Reduces Sneezing, Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement – Made in USA (1 Pack)

**Brand:** felisyl
**Price:** ฿2345
**Availability:** ✅ In Stock

## Summary

> 🐾 Keep your cat thriving with every lick—because healthy cats are happy cats!

## Quick Answers

- **What is this?** L-Lysine Gel for Cats & Kittens (5oz) – Immune System, Respiratory & Eye Health Support. Reduces Sneezing, Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement – Made in USA (1 Pack) by felisyl
- **How much does it cost?** ฿2345 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/49522471-l-lysine-gel-for-cats-and-kittens-5oz-immune-system)

## Best For

- felisyl enthusiasts

## Why This Product

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

## Key Features

- • **Picky Eater Approved:** Smooth, tasty salmon-flavored gel cats love—no more pill battles or stress.
- • **Breathe & See Clearly:** Reduces sneezing, runny nose, and watery eyes for enhanced respiratory and eye comfort.
- • **Quality You Can Count On:** Produced under strict NASC standards in the USA, ensuring purity, safety, and consistent potency.
- • **Vet-Formulated & Trusted:** Created by veterinarians for safe daily use across all life stages, delivering real health results.
- • **Immune Boosting Powerhouse:** Premium L-Lysine supports your cat’s natural defenses against FHV-1 and seasonal stress.

## Overview

Felisyl L-Lysine Gel is a vet-formulated, NASC-certified daily supplement designed to support immune, respiratory, and eye health in cats and kittens. Featuring a palatable salmon flavor, this 5oz gel reduces symptoms like sneezing and watery eyes linked to feline herpes virus and allergies, making it an easy, effective choice for maintaining your cat’s wellness all year round.

## Description

Buy Felisyl L-Lysine Gel for Cats & Kittens (5oz) – Immune System, Respiratory & Eye Health Support. Reduces Sneezing, Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement – Made in USA (1 Pack): L-Lysine - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: So Far So Good. Kitty Approved! - So far, I am pleased with this Lysine gel for my Ragdoll Kitty. I got it because my kitty was suffering from red, irritated eyes with an occasional sniffle / sneeze. I decided to try and treat this internally rather than dealing with eye drops for this problem in her eyes since it would cause her stress and it is topical so the problem would probably continue without keeping that daily regimen up. I needed something systemic and more favorable to my kitty and she is treats and food driven. I was concerned a bit with some of the reviews dealing with quality control and I am happy to say that all is perfect. It smells great, and my cat loves it. She goes for it with the gusto of eating a Churu. She has only had several doses, but I can already see improvement in the redness in the whites of her eyes. I am so happy. Happy cat, happy life. I started on the minimum dose of 1/8th tsp twice a day and I wait to give it to her on a full stomach to avoid some of the digestive upset that can occur as a side effect. The amount you get in the tube is very affordable compared to others in oral drops or other powders and gels that are super expensive on dosing average. I also felt confident to purchase Felisyl due to it receiving the seal of approval from the NASC and believe it or not, during my research of Lysine products, it is even recognized under Good RX for its health benefits and prevention maintenance for my beloved feline along with several other vet formulated lysine products, but they were double to triple the purchase price. Very happy with my decision and hoping she continues to improve in her health, allergies and keeping her immune system well and strong. This product is so much cheaper than a Vet bill or repeat visits because the symptoms are only treated instead of trying to clear the underlying condition that this gel or more like a paste actually does for her internally and systemically. Allergies begone.
Review: Highly recommend - I've been using Felisyl L-Lysine Gel for my cat, who has lifelong allergies, and it’s been a game changer! The gel is easy to administer, and my cat doesn’t seem to mind the taste at all. Since starting the supplement, I've noticed a significant reduction in her allergy symptoms—her sneezing has decreased, and she seems much more comfortable overall. It’s reassuring to know that L-Lysine can support her immune system and help manage her allergies. This product has made a noticeable difference in her quality of life, and I highly recommend it for any cat struggling with allergies!

## Features

- Immune System Support with L-Lysine – Powered by premium L-Lysine for cats, an essential amino acid that supports immune function and helps maintain healthy antibody levels. Ideal for cats and kittens prone to feline herpes virus (FHV-1) flare-ups, seasonal stress, or general immune challenges.
- Respiratory & Eye Health Relief – Helps ease cat sneezing, runny nose, congestion, and watery eyes associated with common upper respiratory issues in cats. Supports clear breathing, eye comfort, and overall wellness—perfect for cats needing gentle respiratory support or allergy relief.
- Tasty, Easy-to-Give Lysine Gel for Cats – A smooth, salmon-flavored lysine gel for cats that most cats lick up willingly. No more pill struggles—just place the gel on your cat’s paw, nose, or dish for effortless daily dosing. Great for picky eaters and kittens.
- Vet-Formulated & Recommended – Created by veterinarians to deliver targeted immune, respiratory, and eye health support in a highly bioavailable L-Lysine gel for cats. Safe for daily use in kittens, adults, and senior cats. Trusted by pet parents and designed for real results.
- NASC-Certified Quality – Made in the USA – Produced in facilities that follow strict NASC standards for safety, purity, and quality control. This premium L-lysine gel for cats is proudly manufactured in the USA, delivering consistent quality and confidence in every serving.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00MO9SHBE |
| ASIN  | B00MO9SHBE |
| Age Range Description | All Life Stages |
| Best Sellers Rank | #1,840 in Pet Supplies ( See Top 100 in Pet Supplies ) #11 in Cat Supplements & Vitamins |
| Brand Name | Felisyl |
| Care Instructions | 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 broken, Store product in cool, dry place, Avoid temperatures above 86° F. |
| Color | Paste |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,925) |
| Date First Available | December 15, 2013 |
| Date First Available  | December 15, 2013 |
| Directions | 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 teasppon 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 bes… |
| Included Components | 1 |
| Item Dimensions LxWxH | 8 x 3 x 2 inches |
| Item Package Dimensions L x W x H | 8.35 x 2.17 x 1.57 inches |
| Item Weight | 0.634 ounces |
| Item model number | FEL6547 |
| Item model number  | FEL6547 |
| Manufacturer | Pet Health Solutions / HealthyPets, Inc. / Sogeval |
| Manufacturer  | Pet Health Solutions / HealthyPets, Inc. / Sogeval |
| Model Name | Felisyl Immune System Support Gel for Cats - L-Lysine Supplement for Respiratory Health - Made in The USA - 5 oz |
| Number of Items | 1 |
| Product Dimensions  | 8 x 3 x 2 inches; 0.63 ounces |
| Size | 1 Pack |
| Specific Uses for Product | Active |
| Target Audience Keyword | house-cats |
| Warranty Description | 1 Month |

## Product Details

- **Active Ingredients:** L-Lysine Monohydrochloride
- **Brand:** Felisyl
- **Flavor:** Gel (5 oz.)
- **Item Form:** Gel

## Images

![L-Lysine Gel for Cats & Kittens (5oz) – Immune System, Respiratory & Eye Health Support. Reduces Sneezing, Runny Nose & Watery Eyes. Daily Salmon-Flavor Supplement – Made in USA (1 Pack) - Image 1](https://m.media-amazon.com/images/I/61B+fxs0M+L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ So Far So Good. Kitty Approved!
*by K***E on January 5, 2026*

So far, I am pleased with this Lysine gel for my Ragdoll Kitty. I got it because my kitty was suffering from red, irritated eyes with an occasional sniffle / sneeze. I decided to try and treat this internally rather than dealing with eye drops for this problem in her eyes since it would cause her stress and it is topical so the problem would probably continue without keeping that daily regimen up. I needed something systemic and more favorable to my kitty and she is treats and food driven. I was concerned a bit with some of the reviews dealing with quality control and I am happy to say that all is perfect. It smells great, and my cat loves it. She goes for it with the gusto of eating a Churu. She has only had several doses, but I can already see improvement in the redness in the whites of her eyes. I am so happy. Happy cat, happy life. I started on the minimum dose of 1/8th tsp twice a day and I wait to give it to her on a full stomach to avoid some of the digestive upset that can occur as a side effect. The amount you get in the tube is very affordable compared to others in oral drops or other powders and gels that are super expensive on dosing average. I also felt confident to purchase Felisyl due to it receiving the seal of approval from the NASC and believe it or not, during my research of Lysine products, it is even recognized under Good RX for its health benefits and prevention maintenance for my beloved feline along with several other vet formulated lysine products, but they were double to triple the purchase price. Very happy with my decision and hoping she continues to improve in her health, allergies and keeping her immune system well and strong. This product is so much cheaper than a Vet bill or repeat visits because the symptoms are only treated instead of trying to clear the underlying condition that this gel or more like a paste actually does for her internally and systemically. Allergies begone.

### ⭐⭐⭐⭐⭐ Highly recommend
*by M***E on January 24, 2026*

I've been using Felisyl L-Lysine Gel for my cat, who has lifelong allergies, and it’s been a game changer! The gel is easy to administer, and my cat doesn’t seem to mind the taste at all. Since starting the supplement, I've noticed a significant reduction in her allergy symptoms—her sneezing has decreased, and she seems much more comfortable overall. It’s reassuring to know that L-Lysine can support her immune system and help manage her allergies. This product has made a noticeable difference in her quality of life, and I highly recommend it for any cat struggling with allergies!

### ⭐⭐⭐⭐⭐ Easy use
*by K***K on February 23, 2026*

I can’t say enough good things about Felisyl L-Lysine! My 27-lb Maine Coon came down with a cold, and I started giving this to him twice a day. Within one week, he was completely back to himself — clear eyes, better energy, and no more sniffles. It was easy to give, and he tolerated it well, which is a huge win with a big, picky boy like mine. I’m so relieved to have found something that truly helped him recover so quickly. Highly recommend for any cat parent looking for extra immune support!

## Frequently Bought Together

- Felisyl L-Lysine Gel for Cats (5oz) – Supports Immune, Respiratory, and Eye Health. Eases Sneezing, Runny Nose, and Watery Eyes. Tasty Salmon Flavor - Made in The USA
- HomeoPet Feline Nose Relief, Safe and Natural Nasal and Sinus Supplement for Cats, 15 Milliliters
- VAZULI Pet Eye Health Ointment for Dogs, Cats, Cattle, Sheep, Horses, Birds and Puppies, Kittens 1/8 oz /3.5gr - 1 Tube

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-08*