Rx Vitamins Immuno Chicken Flavored Liquid Immune Supplement for Cats & Dogs

By Rx Vitamins
Rated 4.25 out of 5 stars
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Rx Vitamins Immuno Chicken Flavored Liquid Immune Supplement for Cats & Dogs, 2-oz bottle slide 1 of 6
Slide 1 of 6
Rx Vitamins Immuno Chicken Flavored Liquid Immune Supplement for Cats & Dogs, 2-oz bottle slide 1 of 6

$22.95Chewy Price
$26.00Chewy Price
$21.80Autoship Price
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About This Item

  • Supplemental liquid that helps maintain a healthy immune system in your furry friend.
  • Contains l-lysine combined with immune-enhancing nutraceuticals to help boost immune function.
  • Helps protect nerve tissue, reduce the effects of free radicals and oxidative damage.
  • Highly-palatable liquid with chicken flavor for easy administration.
  • Approved by the National Animal Supplement Council Seal (NASC).

Questions & Answers

2 Customer Questions

Does it contain any ingredient that my dog can be allergic to?
Answer by ChewyApr 21, 2021
For a complete list of ingredients, click on the 'Nutritional Info' tab, next to the 'Description' tab, just under the product photos. If you are unsure about the safety of this product for your pet, we recommend consulting with your veterinarian.

What is the recommended dose & how much l-lysine is in each dose?
Answer by ChewyFeb 12, 2020
The feeding guide for this supplement is located in the "feeding instructions" that is located right next to the "nutritional information" tab. The exact percentages of ingredients are proprietary to the manufacturer. Ingredients are listed by weight in descending order.

ReviewsWrite a Review

Rated 4.25 out of 5 stars
12 Reviews
Would recommend to a friend

12 Customer Reviews

Rated 4 out of 5 stars
By Cats on Jul 10, 2022

Works good taste awful

I have a cat with feline herpes who is having a flare up more often so we decided to switch over his lysine products. This has worked the best as we know he’s actually taking the correct dose and not spitting out chews. It is poultry flavor but he’s still a cat and hates liquid being squirted into his mouth. We’ve been conditioning him with getting treats after we give him meds. His eye discharge has calmed down a lot. Ideally we want to get down to 1 mL of lysine but do 2 (500 mg) mL when he is having a flare up. I would recommend if you’ve tried literally every lysine chew you can get your hands on and your cat refuses them like mine.

Rated 5 out of 5 stars
By jack on Apr 7, 2022

Must taste good

Some of my cats like this over the top of their wet food. When it's used as a topping, they will try a new food more readily.

Rated 2 out of 5 stars
By carolp495 on Feb 1, 2022

Can't say if it works

My cats did not like these. I put the drops in their food, but they refused to eat it. My cats are very finicky, so just because they don't like them, doesn't mean they wouldn't work for someone else.

Rated 4 out of 5 stars
By HelpfulSupport on Feb 11, 2022

Excellent support product

Has helped immensely. Smell is pretty strong but he reluctantly continues to eat his food.

Rated 5 out of 5 stars
By zingykat on Dec 31, 2020

Works great

My cat sits and takes it pretty well. It works so much better than the chews. I give him chews everyday, but when he has a flare, this is my go to. He breathing clears up in a couple of days at most.

Rated 3 out of 5 stars
By Alphacat on Feb 7, 2021

Too soon to tell

I cannot be sure if it works or not. It is too soon to tell. It doesn't seem to be doing any harm.

Rated 5 out of 5 stars
By Candace on Nov 15, 2020


I use it for my FIV cat and recommend for any animal with a viral infection, stress or other immune deficiency. I have a an able to take my cat off the famcyclovir. Plus it’s tasty for them.

Rated 5 out of 5 stars
By Jenn on Aug 16, 2020

Excellent, Recommend

I have 8 indoor cats 4 of them have the herpes virus that causes respiratory issues and 3 have dermatitis issues - I put L-lysine in their food regularly but I give this also during flare-ups which in my house of 8 is a lot of the time, using this I know they gotten the full does of L-Lysine they need and it really helps them get over their flare-ups better and helps them be more comfortable. I done both put in food but mostly I just squirt in mouth with no problems.

Rated 5 out of 5 stars
By Disappointed on Mar 21, 2020

No response

This item was left out of my shipment. I have tried emailing and calling the company since 3-18-2020 and to date have received no response. I am a long time customer and was charged for an item I DID NOT RECEIVE AND CAN'T GET ANY RESPONSE. At the writing of this email I haver been on hold one hour and 47 minutes. As I said I tried email before calling for three days

Rated 5 out of 5 stars
By Lynnz on Mar 24, 2020

Great stuff

All my cat's love it and it's a great immune booster. I'm so glad Chewy is now carrying this item because I rely on it to help keep the allergies down. It also does wonders for the cat's coats. They all love the chicken flavor! Thank you RX Vitamins and Chewy!