My Account

Viralys Oral Gel For Cats

$24.99 $17.99 
Ships in one business day or less
Select an Option:
5 oz
Price w/coupon TOPTEN
You save $6
$24.99 $17.99 
Ships in one business day or less
Please select all product options.
Select a Quantity:
Please select all product options.
Product Info
How to Use
Customer Reviews
Product Info
What is Viralys Oral Gel For Cats?

Viralys Oral Gel For Cats is a highly palatable gel formulated to support a healthy immune system and recommended for conditions responsive to L-Lysine. It also helps support respiratory health and helps maintain normal eye function and health.


Cats and Kittens

  • Supports healthy immune system
  • Good for conditions responsive to L-Lysine
  • Supports respiratory health
  • Helps maintain normal eye function and health
  • Easy to administer
  • Palatable flavor cats and kittens will love
  • No reported side effects
How it Works:

Viralys contains L-Lysine, an amino acid. Viralys supports the immune system, as well as respiratory health and eye health. It is recommended for conditions known to respond to L-Lysine supplementation.


Keep out of the reach of children and pets. Safe use in pregnant pets or pets intended for breeding has not been proven. If your pet's condition worsens or does not improve, stop product administration and consult your veterinarian.

Brand Name:

Viralys Oral Gel for Cats

Active Ingredient(s):

L-Lysine Hydrochloride 250 mg per ¼ tsp (1.35 grams).

What is this product used for:

Viralys is a nutritional supplement available as a highly palatable gel.


Viralys is a non-prescription (OTC) product.

How this product should be used:

Place a small amount on your cat's nose to stimulate taste interest. Once initial interest has been established, the gel may be given from a syringe or teaspoon. Each 1.35 grams (¼ teaspoon) contains approximately 250 mg of L-Lysine. The suggested dose for cats over 6 months of age is 1.35 grams (¼ teaspoon) by mouth twice a day. For kittens under 6 months of age, the suggested dose is 0.675 grams (⅛ teaspoon) by mouth twice a day. Adjust dosage as recommended by your veterinarian.

What are the side effects:

There are no reported side effects.

What special precautions are there:

Safe use in pregnant pets or pets intended for breeding has not been proven.

In the event of an overdose:

Contact a veterinarian or veterinary emergency room.

How should I store this product:

Store this product at controlled room temperature. Keep out of the reach of children.

How to Use
  • Viralys is a highly palatable gel and nutritional supplement containing L-Lysine.

Place a small amount on cat's nose to stimulate interest. Once initial interest has been established, gel may be administered from a syringe or teaspoon.

Kittens: (under 6 months of age)
All weights
⅛ teaspoon (0.675 g) given orally twice daily. Adjust dosage as directed by your veterinarian.
Cats: (over 6 months of age)
All weights
¼ teaspoon (1.35 g) given orally twice daily. Adjust dosage as directed by your veterinarian.
Do not use!
Do not use!

Store at room temperature.

Viralys Oral Gel for Cats:
Active Ingredients (per ¼ tsp):
L-Lysine Hydrochloride
250 mg
Inactive Ingredients:
Citric Acid
Maple Flavor
Potassium Sorbate
Purified Water
Riboflavin 5'-Sodium Phosphate
Sodium Benzoate
Sodium Carboxymethylcellulose
Tetrasodium Ethylenediaminetetraacetate
Customer Reviews
Viralys Oral Gel For Cats is rated 4.7083 out of 5 by 24.
Rated 5 out of 5 by from Tasty & easy to administer My vet started my cat on this for chronic respiratory issues and eye related to herpes. My cat loves the gel (hated the powder form added to food). So easy to give twice daily as she thinks it is a treat! Wish I started this years ago! I just give on a spoon!
Date published: 2016-02-05
Rated 3 out of 5 by from Artifical sweetener. Really? After the loss of our alpha, who had FHV since we adopted him @ 6m old, we adopted a pair of male kittens (4 and 5m old respectively. This product was provided by the no-kill animal shelter where we adopted from. - - -. Active Ingredient(s): Purified water, L-Lysine HCl, sodium carboxymethylcellulose, potassium sorbate, sodium benzoate, artificial sweetener, maple flavor, citric acid, riboflavin 5'-phosphate sodium. Inert or inactive ingredients not listed. - - - The active ingredients read like a chemistry set supply list. And, an artificial sweetener? Couldn't the company use a bit of organic Stevia and make it a bit less artificial. For what they charge for both the amount of L-Lysine supplied and over quantity (5oz), one could purchase a 1# container of NOW L-Lysine powder and get more overall L-Lysine (435mg/.25 tsp), a longer shelf life (3+ years), and less mess from the wonderful taste that causes the cats to drool this all over the floors.
Date published: 2015-08-23
Rated 4 out of 5 by from May be good, too bad my cat won't eat it I tricked her the first time, by adding a few pieces of her preferred dry food (Anergen), but after that she ran away every time I'd try to give it to her. Even leaving it on top or mixed into, her dry food, was not effective as she just moved the offending piece to the floor. I returned it (got a prompt reply and easy shipping back too) and got the Vetri-Lysine Soft Chews instead, which she always eats (even eagerly, at times). I tried it myself (!) and it really has a maple-esque flavor...I'm not sure I can rate it for effectiveness or taste for the cat, as it was too short a time-frame of use for me to tell. Give this a try is all I can advise to those unsure.
Date published: 2014-04-22
Rated 5 out of 5 by from My 13 year old cat gets this every day - I give him the recommended daily dose of two 1/4 tsps and I simply squeeze a 1/4 tsp amt on my index finger and hold his little head while asking him to open his mouth and I just swipe it in - he smacks it down and can't do without it or his sneezing and runny nose starts back .... this is great stuff and my vet recommended it.....and so do I - it beats a regular vet bill.....
Date published: 2014-01-29
Rated 5 out of 5 by from This product is easy to use I started my cat on this two months ago and he has been healthier and happier in last month than since I first got him...when he was in full Herpes outbreak...sneezing, wheezing, coughing, runny nose and eyes. The gel is very easy to give in a syringe in his mouth. Magic just takes it then acts like nothing happened. And now, in the last month, he has only sneezed a couple of times, coughed maybe once and no discharge from his eyes. You have to give it about a month to start seeing any changes. I am very happy with this product. And ease of ordering.
Date published: 2013-12-04
Rated 5 out of 5 by from great if your kitty likes it! It took several days for her to warm up to it, and I had to pretend to eat it myself to get her interested, but once my finicky little feline decided to sample this gel, she LOVED it. I simply squeeze it into a teaspoon and she eats it right up. She'll even ask for it if it's late and I haven't given her her daily dose. With Lysine, she's perky, energetic, bright-eyed and lively. Without it, she's a drippy-nosed little bundle of sad.
Date published: 2013-09-27
Rated 5 out of 5 by from my vet told me that my cat would be on this medicine for the rest of hs life. its so much cheaper to buy it this way.....
Date published: 2013-04-02
Rated 5 out of 5 by from Love that Maple Overall this is a good product! Though my cats tested negative for feline herpes virus, the treatment of similar symptoms is wonderful. My cats' eyes have cleared up, and my female's cough has gone away after a nasty virus. She still is getting over her sneeze, but her sneezing has been cut down by, I would say, 75%. I'm continuing to give both of my cats this medicine in the morning and at night in their cat food, and they both eat it without hesitation! It also has a wonderful smell of maple, and my female loves it the most.
Date published: 2013-03-06
  • 2016-05-27T06:02CST
  • bvseo_cps, prod_bvrr, vn_cps_3.2.1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_24
  • loc_en_US, sid_prod11133, PRD, sort_mostRecent
  • clientName_1800petmeds

Where is this product made?

Asked by: Kari
This product is manufactured in the U.S.A.
Answered by: Cherley Petmeds Pro
Date published: 2016-03-19

Will this l-lyzine help gagging when purrs

My 11 year old just had a good physical and I forgot to mention her gagging when she purrs. I was reading about the L-Lyzine may help her. Thanks for any help.
Asked by: mrsrlp
Hi. If L-Lisene was recommended I'd try it. It's easy to give in syringe. My cat is on it for Herpes and I've seen him feeling better than he's felt since I've had him. Hooray! It took about a month for me to see results but now he's doing sooooo much better.! And this site sends out meds quickly. Got order if just a few days. Good luck!
Answered by: Erin Leigh
Date published: 2013-12-04

Will Viralys help upper respiratory infections generally? Are there any downsides to trying it?

We have a ten-year-old spayed female longhair cat who has had chronic URIs since kittenhood. The vet told us when we got her that there was no cure, and all we could do was provide supportive care. She has a bout about every 18 months, but as she's getting older, it's taking her longer to bounce back. She eats and drinks and eliminates normally, has no discharge from eyes or nose, but she breathes heavily, especially when she purrs, and coughs occasionally. Would this product help? Are there other products we could try? At the moment, vet care is beyond our means, but we want to do the best we can for her.
Asked by: luthorienne
I give my cat Viralys for Herpes twice a day and it took about a month on it before I saw results. He's sneezed maybe twice on 2nd month being on it, he's stopped wheezing, except when he plays too hard. But that doesn't even slow him down. His eyes look good, minor, very minor, nose dripping once in awhile. I'd say my cat is doing better than I've ever seen him do since I acquired him. No new outbreak since starting Viralys. I'd at least try it. I give him 1.25ml twice a day in a syringe which he takes just fine. Good luck!
Answered by: Erin Leigh
Date published: 2013-12-04


Does a syringe come with this?
Asked by: Anonymous
Answered by: Lilli Pharmacist
Date published: 2013-06-24

Can you use Viralys (gel) that expired last month?

I just noticed the tube that I have expired last month, I have ordered more, but can I use this until the new tube gets it safe?
Asked by: DramaQueen
Hi, You do not want to use this if it is expired.
Answered by: James PetMeds Pro
Date published: 2012-11-01

how long will it take before the runny eyes and sneezing stop after the supplement has been given

Asked by: Dee
I usually see a slight improvement in around 3 days or so with my cat. Although all she has is the sneezing. She does not have runny eyes. She does show a much better improvement after longer periods. However i see the symptoms start up again after a week of not getting any meds. For instance she stops taking her treats or I have run out of the paste . She hates the paste ritual so I try to give the treats when she will eat them.
Answered by: wildcats mom
Date published: 2012-09-30

Do you have any retail outlets in new york state?

Preferably around I81
Asked by: Anonymous
Hello, Unfortunately, our only facility is located in Pompano Beach, Florida. Thanks for the question.
Answered by: Rich - Student Pharmacist
Date published: 2012-08-11

What is the volume of the package contents?

Gary, you've given so many great answers here, but the 5 oz. on the package is by weight, so I'm not sure it equals about 150 ml as you said. I'm comparing this product to another lysine supplement, which is more potent (250 mg/ml) but also is packaged by volume, and I'm definitely interested in calculating the cost per dose. Thanks!
Asked by: Kittymama
16 oz = 473 mL. So 5 oz comes out to about 147.8 mL. Hope that helps.
Answered by: Rich, Pharmacy Intern
Date published: 2012-04-20
  • 2016-05-27T06:10CST
  • bvseo_cps, prod_bvqa, vn_cps_3.2.1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_30
  • loc_en_US, sid_prod11133, PRD, sort_recentAnswersFirst
  • clientName_1800petmeds
Live Chat Share Website Feedback