Duralactin Feline L-lysine Cat Supplement, 32.5-mL syringe

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  • Eye Care
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($0.37 /mL)
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About This Item

Details

  • Helps manage chronic inflammatory conditions in 4 to 7 days with peak effects seen in 10 to 14 days and helps maintain respiratory and ocular health especially in your cat who is physically stressed.
  • Give this supplement to your furry friend alone or with other therapies, it does not inhibit COX-1 or COX-2.
  • Use this purr-fect supplement short or long term.
  • Contains MicroLactin, a protein derived from milk, plus L-lysine, for use in your cat or kitten with conditions responsive to MicroLactin and L-lysine.
  • Feed this delicious poultry paste directly to your feline friend or with food.

Ingredient Information

Instructions

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Questions & Answers

26 Customer Questions

Is this good for feline herpes?

Answer by Chewy • Nov 22, 2018
L-lysine is often used to help with various ailments, including viral infections and feline herpes virus. L-lysine has been shown to reduce the severity and the duration of the feline herpes virus. It halts the replication of the virus by interfering with another amino acid called arginine, which the virus needs in order to replicate.

Does the Duralactin Fleine L-Lysine Paste have to be refrigerated after opening?

Answer by Chewy • Mar 30, 2022
This Feline L-lysine supplement should be kept at room temperature even after opening.

Shelf life of duralactin for cats?

Answer by Chewy • Nov 21, 2019
This supplement has a shelf life of approximately 2 years from the Date of Manufacture.

What does "poultry recipe" mean?

Answer by Chewy • Jun 14, 2018
"Poultry Recipe" is referencing the inactive ingredient poultry digest that is used in the supplement.
Reviews
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4.2
Rated 4.2 out of 5 stars
597 Ratings
Terms & Conditions

Customers Mention

Chewy identifies key considerations with the help of artificial intelligence and our veterinarians.

Effectiveness

84% Positive

Form and Administration

77% Positive

Ingredients

79% Positive

Nutritional Value

72% Positive

358 Customer Reviews

Rated 5 out of 5 stars
By Sarah on Jan 7, 2026

Works wonders!

I have been giving Duralactin to my cat Darla since around 2017. When she was a kitten we found out she had Feline Herpes Virus. I did so much research to figure

I have been giving Duralactin to my cat Darla since around 2017. When she was a kitten we found out she had Feline Herpes Virus. I did so much research to figure out how to combat symptoms! I learned about Duralactin from a facebook group and have been giving it to her ever since. She gets it every other day but when she had a flare up, I give it to her everyday until the symptoms are gone. Her symptoms are mostly eye related, watery and gunky eyes. It’s fantastic and she licks it right off the spoon!

Rated 2 out of 5 stars
By Elizabeth on Jan 4, 2026

Caused frothing but easy to administer

As with certain medications that have flavors, caused way too much frothing to use. Also date of manufacture was one year ago and no expiration date provided. Tube

As with certain medications that have flavors, caused way too much frothing to use. Also date of manufacture was one year ago and no expiration date provided. Tube came wrapped in a Ziploc bag. Finally while easy ro administer on your finger, if you put it in your cats mouth and administer it the contents shoot out so quickly (and far) there is danger of aspiration.

Rated 5 out of 5 stars
By Debbie on Jan 16, 2026

Ease of use & efficacy

Our 2 y/o kitty has allergies and the vet prescribed Duralactin L-lysine for her. She has improved greatly with just one dose per day. This is so easy to use and

Our 2 y/o kitty has allergies and the vet prescribed Duralactin L-lysine for her. She has improved greatly with just one dose per day. This is so easy to use and you know you're getting the right doseage. Thank you, Chewy for carrying this product.

Rated 3 out of 5 stars
By Kyle on Jan 2, 2026

It’s ok

It’s paste my cat foams at the mouth when taking it he don’t like it maybe because it’s no flavor which I thought would be best because he’s allergic to a lot of

It’s paste my cat foams at the mouth when taking it he don’t like it maybe because it’s no flavor which I thought would be best because he’s allergic to a lot of things but I guess not.

Rated 5 out of 5 stars
By Loretta on Sep 30, 2025

great price and my picky gal loves it!

My girl is picky and won’t even eat wet food, but loves both this Duralactin as well as Felisyl brand flavored lysine gel. The former probably has more product and

My girl is picky and won’t even eat wet food, but loves both this Duralactin as well as Felisyl brand flavored lysine gel. The former probably has more product and is closer to 20$, while the Duralactin is half that and also has added omegas and other nutrition. So I give both interchangeably, opting for felisyl one day, Duralactin the next. My cat was a feral 6month old when I found her and she has feline leukemia. Lysine helps keep her immune system strong and prevent any illness or infection that could become serious for her. Lysine also helps cats with other diseases and illnesses, and is especially good at treating and preventing ocular (eye) issues such as conjunctivitis. It helps with colds, allergies, and flu, and has also long been a staple to prevent and treat feline herpes flare ups, though there has been conflicting research more recently on that last one. All in all, lysine is a great supplement for the majority of cats and the flavored kinds are FAR easier to give than the powdered or pill versions. For my girl, this is a favorite treat. For me, it is peace of mind.

Rated 5 out of 5 stars
By Melissa on Dec 29, 2025

Great paste for health

This item is definitely tasty and my kitty cat likes it I feed it to her twice a day no problem and I see an improvement.

This item is definitely tasty and my kitty cat likes it I feed it to her twice a day no problem and I see an improvement.

Rated 5 out of 5 stars
By Debra on Jan 11, 2026

Price and recommendation to purchase

TC, Pepper, and several other have seasonal allergies. Vet recommended L-lysine for them.

TC, Pepper, and several other have seasonal allergies. Vet recommended L-lysine for them.

Rated 3 out of 5 stars
By Nicole on Oct 9, 2025

Notch notch go

This is a great product- just needs a little better notch control/ or directions on getting started. My first push- I needed up with WAAAY to much Lysine.

This is a great product- just needs a little better notch control/ or directions on getting started. My first push- I needed up with WAAAY to much Lysine.

Rated 5 out of 5 stars
By Maria on Oct 27, 2025

It helps with his meds

Sammy (age 14) has a chronic URI. This helps keeping it under control, especially on his days off the antibiotic.

Sammy (age 14) has a chronic URI. This helps keeping it under control, especially on his days off the antibiotic.

Rated 5 out of 5 stars
By Katie on Jul 17, 2025

Easy to use and feed

Vet recommended lysine for my cat who was sneezing. Turns out she was allergic to the litter. But this was so easy to pop on top of her food, she thought it was

Vet recommended lysine for my cat who was sneezing. Turns out she was allergic to the litter. But this was so easy to pop on top of her food, she thought it was a treat! She loved it and usually she's a bit reluctant with medicines or supplements in food. We don't need to use it anymore, but I would recommend it to anyone to try and will use it again in the future if vet recommends lysine again.