Vetoquinol Flexadin Advanced with UCII Collagen Soft Chews Joint Supplement for Dogs & Cats, 60 count

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About This Item

Details

  • Supports healthy joints and flexibility
  • Omega-3 fatty acids help relieve inflammation and soothe aching joints
  • Vitamin E, a well-known antioxidant and free radical, helps prevent the breakdown of cartilage
  • UCII, an undenatured type II collagen derived from chicken sternum, provides optimal joint support
  • This highly palatable and easy to chew treat is suitable for all dogs and cats

Ingredient Information

Instructions

FAQ

Learn More About Vetoquinol From Our Team of Experts

About Vetoquinol Flexadin Advanced with UC-II

Just 1 Chew Per Day

You only need to give your pet one Flexadin Advanced chew per day, regardless of age or weight. Whether you have a small kitten or a large breed adult dog, a once-daily dose of these specially designed chews is all your cat or dog needs. Made for dogs and cats of all sizes—from puppies and kittens to adults!

100% Satisfaction Guarantee

We’re so sure your pet will like it that our products come with a 100% satisfaction guarantee.

For Hips and Joints

This high-quality, veterinarian-developed formula provides joint support with just one dose per day.

Promotes Healthy Cartilage

Undenatured chicken collagen type II (UC-11) in the formula works differently than glucosamine and chondroitin.

What is UC-11?

This proprietary ingredient helps maintain healthy cartilage and supports immune system function.

Great for Multi-Pet Homes

Dogs and cats alike love the taste of Flexadin Advanced!

About Vetoquinol

Vetoquinol believes that a healthy pet is a happy pet. That’s why they are committed to creating uniquely formulated products that are easy to administer and designed to foster good health at every life stage. Since 1933, this independent family business has been on a mission dedicated exclusively to animal health. Their goal every day is to enrich the lives of pet parents by helping their pets be well and thrive!

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Questions & Answers

20 Customer Questions


Where is this product made? Where are the ingredients sourced from?

Answer by ChewyOct 10, 2019
This product is made in Canada. The majority of the ingredients are sourced in Canada as well as the USA.

How long does this take to “kick in”? I have a 20-lb cat and no improvement in almost a month... should I keep giving them to her because it takes a while? The vet told me to get these....

Answer by ChewyOct 17, 2020
The amount of time it takes for these chews to have an effect on your pet will vary based on their current condition, weight, and eating habits among other factors. We recommend reaching out to your veterinarian with any questions you have regarding the efficacy of this supplement.

Can dogs with renal insufficiency take these? What is phosphorus content?

Answer by ChewyMay 20, 2021
There are no contraindications for Flexadin Advanced Chews with UCII for Dogs & Cats. The manufacture does not measure for phosphorus content. These chews are only 3 grams each and the directions are to give 1 chew per day for any size cat or dog. It would be a very small amount of phosphorus in each chew.

What is the calorie content of each chew?

Answer by ChewyNov 14, 2019
These chews contain approximately 15 calories per chew.

4.7
Rated 4.7 out of 5 stars
1589 Ratings

Customers Mention

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

Active Ingredients

87% Positive

Dosage and Administration

84% Positive

Effectiveness

89% Positive

Quality and Purity

86% Positive

592 Customer Reviews



Rated 4 out of 5 stars
By Gen-Phill on Feb 25, 2026

These are really made for dogs, but they work.

My 8.5-lb cat couldn't get the whole thing in her mouth. She was interested in it, but she doesn't have the bite force or jaw size of a dog, so I had to break it

My 8.5-lb cat couldn't get the whole thing in her mouth. She was interested in it, but she doesn't have the bite force or jaw size of a dog, so I had to break it up for her. Saw positive effects within days. She was jumping and running and even now that she's been on it for awhile, she will sit like she used to before her hip got bad, but not always. She liked it the first two doses, but won't touch them now (three months later) unless I hide them in her food and even then she might not eat it; I can't help but wonder if something changed or that first ultra-tough "cat chew" put her off.


Rated 5 out of 5 stars
By Laura on Mar 13, 2026

Has helped so much!

My 70 pound yellow lab, Lily has had arthritis in her one knee for awhile. It's from hurting it when she was young. She used to limp on occasion, or have trouble

My 70 pound yellow lab, Lily has had arthritis in her one knee for awhile. It's from hurting it when she was young. She used to limp on occasion, or have trouble when getting up or when jumping, from that knee. She has been taking these for months now and her limp is gone and she jumps and runs like nothing. It's great!


Rated 4 out of 5 stars
By Lauren on Mar 5, 2026

ACL rupture recovery

My tiny dog suffered ACL rupture, and watching her struggle to walk was devastating. After researching ways to support her recovery alongside her vet's treatment,

My tiny dog suffered ACL rupture, and watching her struggle to walk was devastating. After researching ways to support her recovery alongside her vet's treatment, I decided to start her on a Chicken Collagen Type II supplement. I truly believe it helps and protect her joints and ligaments.


Rated 4 out of 5 stars
By Judy on Jan 18, 2026

Princess Loves this!!!

I didn't see many reviews for cats. What I did see was positive. My 19 yo Calico that is beyone picky Can't wait for this. I haven't seen her excited in years

I didn't see many reviews for cats. What I did see was positive. My 19 yo Calico that is beyone picky Can't wait for this. I haven't seen her excited in years. Now to see if it helps her arthritis is why I gave it four stars. Only 2 treats so far. The piece is bigger so I easily break it down for her. I am anxious to see if her movement improves as she does have a bit of a limp. For the price if it helps it is definitely worth it. I will update when I see if it helps her movement at a later time.


Rated 5 out of 5 stars
By Marcia on Mar 10, 2026

Seems to work!

Much to my surprise, this product appears to be productive! My two senior dogs appear to have more spring in their step. They’ve been on it for 2.5 months. So far

Much to my surprise, this product appears to be productive! My two senior dogs appear to have more spring in their step. They’ve been on it for 2.5 months. So far so good!


Rated 5 out of 5 stars
By Stephanie on Feb 22, 2026

Same day impressions

Wow! I noticed immediately this product helped my dogs body that had been recovering from an injury. I have told all our dog friends to get their babies on it. Very

Wow! I noticed immediately this product helped my dogs body that had been recovering from an injury. I have told all our dog friends to get their babies on it. Very happy with it!!


Rated 5 out of 5 stars
By Judith on Dec 8, 2025

Amazing results!

Almost immediately (within a few days, actually), our Rudy was acting like a different dog! He no longer hesitated before jumping into my lap and didn't tire as

Almost immediately (within a few days, actually), our Rudy was acting like a different dog! He no longer hesitated before jumping into my lap and didn't tire as quickly when playing his favorite game of "keep the ball from daddy!" We could hardly believe the difference. It's wonderful to have our precious Rudy feeling like his old self! It even comes in a "dog chew" that he absolutely loves so much that It's become a treasured morning treat for him. This product is amazing!!! Thank you, Chewy, for providing this wonderful arthritis medication!!!


Rated 5 out of 5 stars
By Jackie on Feb 7, 2026

He likes it! And it has helped him!

This has worked wonders for George. He’s struggled with his left knee for a long time. Definitely improved with this product that my veterinarian recommended!

This has worked wonders for George. He’s struggled with his left knee for a long time. Definitely improved with this product that my veterinarian recommended!


Rated 1 out of 5 stars
By Jojo on Dec 16, 2025

VERY disturbed by Flexadin

After 14 months on this product I finally called them because I was concerned their marketing is deceptive. They state there is 40mg of UC2 collagen but if you

After 14 months on this product I finally called them because I was concerned their marketing is deceptive. They state there is 40mg of UC2 collagen but if you read the back of the package it says onky 10mg of Undenatured UC2. That is what is needed to help rebuild the cartilage and what was tested in all the studies!! So our dogs are NOT getting the dose they need as seen in other products which is 40mg. i’ve been sitting here spending all this money and my dog has not seen any benefit from this and now I know why because there’s barely any underneath your collagen in this product!


Rated 4 out of 5 stars
By H on Dec 24, 2025

Big. Pricey. Not his favorite

I am not sure how well these are helping with the joints, but they did seem to make my cat’s fur very soft, and his skin less flaky than it was. I am happy about

I am not sure how well these are helping with the joints, but they did seem to make my cat’s fur very soft, and his skin less flaky than it was. I am happy about that, but these are quite pricey, and I may not be able to continue purchasing them..