Skip to Main Content ›
FREE Shipping on orders over $49
20% OFFCoupon Code:
100% Satisfaction Guaranteed
 20% OFF w/code
FREE Shipping $49+
100% Satisfaction Guaranteed
My Account

Viralys Oral Gel For Cats

$24.36 $17.10 
Ships in one business day or less

Step 1. Select an Option:

5 oz
Price w/coupon SAVE20
You save $7
$24.36 $17.10 
Ships in one business day or less

Step 1. Select an Option:

5 oz
Price w/coupon SAVE20
You save $7

Step 2. Select a Quantity:

Please select all product options.

Step 2. Select a Quantity:

Please select all product options.
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 does Viralys Oral Gel For Cats work?

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.

How to Use

Viralys Oral Gel for Cats Directions:

  • 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.

Viralys Oral Gel Dosage for Cats and Kittens:

Kittens: (under 6 months of age)
All weights 1/4 teaspoon (1.35 g) given orally twice daily. Adjust dosage as directed by your veterinarian.
Cats: (Over 6 months of age)
All weights 1/2 teaspoon (2.7 g) given orally twice daily. Adjust dosage as directed by your veterinarian.
Viralys Oral Gel Dosage for Dogs:
Do not use!
Viralys Oral Gel Dosage for Horses:
Do not use!

Store at room temperature.


Viralys Oral Gel for Cats Ingredients:

Viralys Oral Gel for Cats
Active Ingredients (per ¼ tsp):Amount:
L-Lysine Hydrochloride 500 mg
Inactive Ingredients: Citric Acid, Maple Flavor, Potassium Sorbate, Purified Water, Riboflavin 5'-Sodium Phosphate, Sodium Benzoate, Sodium Carboxymethylcellulose, Sucralose, Edetate Disodium.
Customer Reviews
Viralys Oral Gel For Cats is rated 4.7 out of 5 by 27.
Rated 5 out of 5 by from Must have I have one kitty with chronic conjunctivitis and one that sneezes a lot but no other symptoms. My cats do well if I keep them on this but even a few days without their symptoms come back. I use the gel and a syringe.
Date published: 2017-06-10
Rated 5 out of 5 by from GREAT PRODUCT I founded and run a cat rescue and use this with and after antibiotics for sick feral kittens. I use a small medicine syringe to easily measure and administer, and they love the flavor. I never have a problem getting them to take it, and it seems to make a big difference in their recovery and well-being maintenance.
Date published: 2016-12-03
Rated 5 out of 5 by from They love it! This works well, it almost look like a gel when it comes out of the tube. I have one cat with Feline Leukemia and Herpes and another with just Herpes (they're kept separate), both are a bit finicky. Thankfully they take this form of Lysine best and it's so easy to give it to them, I just use a measuring spoon and they lick it right away. I tried different treats for months and they hated nearly all of them. The only one they liked I can't find anywhere or they changed their formula and the treats are now rock hard. Either way this is so great stuff and even if you give the max amount (500mg) it lasts about three months, compared to the treats which only last about 2 for the same price.
Date published: 2016-05-29
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
  • y_2018, m_1, d_11, h_10
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_27
  • loc_en_US, sid_prod11133, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_1800petmeds

Does this work for the virus herpes eye gel

Asked by: Funk
This product is to be given orally. The oral gel helps with the symptoms associated with the virus.
Answered by: Crystal PetMed Pro
Date published: 2017-06-22

how many servings per tube l-lysine?

how many servings per tube l-lysine?
Asked by: Maisy
It depends on your cats age and the dosage prescribed by your veterinarian. Each tube contains 5 ounces, or 30 teaspoons. Typically, for cats under 6 months of age, the dose is ⅛ teaspoon (0.675 g) given orally twice daily. For cats 6 months of age or older, the dose is ¼ teaspoon (1.35 g) given orally twice daily. This would last anywhere from 120 days to 240 days depending on your cats dosage.
Answered by: Christine
Date published: 2017-06-05

Can this be used for dogs? 

Asked by: JM8765
This medication is formulated only for cats. Talk to your veterinarian about an alternative for dogs.
Answered by: paulpharmacistintern
Date published: 2016-08-09

Can Viralys gel be mixed with wet food?

Asked by: Jo
Yes you can.  My kitten gobbles it right up! I just squeeze a little on top of her wet food.
Answered by: Chantel
Date published: 2016-07-11

Where is this product made?

Asked by: Kari
This product is manufactured in the U.S.A.
Answered by: Cherley Petmeds Pro
Date published: 2017-06-05

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: 2017-06-05

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: Sloopy727
Answered by: Lilli Pharmacist
Date published: 2013-10-22
  • y_2018, m_1, d_11, h_10CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_31
  • loc_en_US, sid_prod11133, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_1800petmeds
Get 10% OFF Now Offer
Live Chat Share Website Feedback