VetriScience GlycoFlex Stage III Ultimate Strength Joint Support Bite-Sized Cat Chews, 60 count
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GlycoFlex III Hip and Joint Supplement for Cats represents the third stage of VetriScience Laboratories’ comprehensive joint support program designed to maintain connective tissue function, joint comfort and mobility through all stages of your cat’s life. Recommended by veterinarians for over 30 years, this formula offers higher levels of glucosamine, MSM and perna canaliculus for superior joint care. Glyco Flex III for Cats also includes grape seed extract, L-glutathione and selenium to promote optimal nutrient absorption and immune support. These chews are great for cats that are slowing down due to aging, weight gain or other joint related issues.
Key Benefits- High levels of glucosamine, MSM and perna canaliculus for superior joint care
- Also includes grape seed extract, L-glutathione and selenium to promote optimal nutrient absorption and immune support
- These chews are great for cats that are slowing down due to aging, weight gain or other joint related issues
- Formulated specifically for cats
- Palatable treats are naturally flavored with real chicken liver
Safe use in pregnant animals or animals intended for breeding has not been proven. If lameness worsens, discontinue use and contact your veterinarian.
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Item Number60806
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LifestageSenior, Adult
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Food FormSupplement
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Product FormSoft Chew
Arabic Gum, Brewers Yeast, Calcium Sulfate, Canola Oil, Chicken Liver Flavor, Citric Acid, Glycerin, Maltodextrin, Mixed Tocopherols, Pectin, Propionic Acid, Rosemary Extract, Silicon Dioxide, Sodium Alginate, Sorbic Acid, Soy Lecithin, Vegetable Oil, Water.
Use Stage | Daily Feeding |
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Initial (4 - 6 weeks) | 2 chews/10 lbs body weight |
Maintenance | 1 chew/10 lbs of body weight |
If giving more than 1 soft chew daily, divide between AM and PM.
Why should I include vitamins & supplements in my pet’s diet?
Most commercial pet foods include baseline vitamins and nutrients, but some may not have the adequate amount to suit your pet’s exact health needs. Like in humans, vitamins and supplements can help support your pet’s long-term health, regulating everything from digestion to muscle growth. Consult your veterinarian to determine the best vitamins and supplements for your furry friend.
How often should I give this supplement to my pet?
It is recommended to give the suggested dosage based off your pet’s weight. Please refer to the Feeding Instructions tab and consult with your veterinarian for more information.
Is this supplement safe to use with the medication my pet is currently taking?
If your pet has a medical condition and is taking other medication, we recommend consulting with your veterinarian to ensure that this supplement is safe to use.
My pet is allergic to certain ingredients, will this product be safe to use?
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.
Does this product come in other product forms?
For a complete assortment of products by the manufacturer of this supplement, click on the link next to the item name at the top of the page. You can also find an assortment of supplements across all product forms on our page.

Clinically Proven Joint Support
GlycoFlex gives your cat comprehensive joint support for mobility, flexibility and everyday comfort in the form of a delicious treat that she'll actually want to eat. Available in both tablets and bite-sized chews, GlycoFlex is recommended by veterinarians to provide joint support at every stage of your pet's life.


Formulated to Support a Lifetime of Healthy Joints
GlycoFlex 2 combines powerful ingredients like green-lipped mussel, glucosamine, MSM, manganese and a patented DMG to support joint comfort, structure and function.
GlycoFlex 3 is an extra-strength formula to ease joints and support connective tissue functions. These bite-sized chews also contain vitamins C and E.
GlycoFlex Plus uses an advanced combination of ingredients that includes antioxidants and vitamins to cushion joints and support overall comfort and mobility.
Time-Tested Ingredients
GlycoFlex uses time-tested active ingredients to provide support for joint mobility, flexibility and overall comfort. Perna canaliculus, or green-lipped mussel, is found in every formula to help maintain healthy connective tissue. Glucosamine helps build healthy cartilage, and MSM is included as a necessary ingredient for forming connective tissue in the joints.

About VetriScience
As the makers of GlycoFlex and an extensive line of pet supplements, VetriScience Laboratories is a leader in the pet health industry. For over 40 years, VetriScience has led the way by providing exceptional and innovative supplements created for the health and well-being of companion animals. They are committed to using only pure and highly researched ingredients to produce quality products that are safe and effective.

Customer Reviews
85% Recommend
85% of reviewersrecommend this product
You've Already Reviewed This Item
237 Reviews
Showing 1-10 of 237 Reviews
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Mac & Cheese Approved
By CatDad32 on Dec 27, 2020
Ive got a fat 8 yr old kitty who had stopped playing and got crabby when we pet her back in a certain place or lifted her little paws to clip her nails... Dogs in the house got into her cosequin treats and devoured the bag ¯\_(:/)_/¯ When I went to go order more, they were COMPLETELY sold out. I wanted to get her something for relief because I didnt know when those would come back. She wouldn't eat the cosequin alone, I had to crumble it over her food but she WILL eat these willingly as snacks. And they seem to be working, Mac n Cheese is getting zoomies and jumping and swatting toys again!!!! And she actually plays with her wand toys!!!! The only downside is that for some reason, if i give Ive got a fat 8 yr old kitty who had stopped playing and got crabby when we pet her back in a certain place or lifted her little paws to clip her nails... Dogs in the house got into her cosequin treats and devoured the bag ¯\_(:/)_/¯ When I went to go order more, they were COMPLETELY sold out. I wanted to get her something for relief because I didnt know when those would come back. She wouldn't eat the cosequin alone, I had to crumble it over her food but she WILL eat these willingly as snacks. And they seem to be working, Mac n Cheese is getting zoomies and jumping and swatting toys again!!!! And she actually plays with her wand toys!!!! The only downside is that for some reason, if i give her a whole one she barfs. So what I've been doing is breaking them in half and waiting like an hour between giving the first half, which honestly isn't a big deal. They'd be 10/10 if she didnt barf everywhere :3. … more
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We call these the jumping meds
By Kate on Jan 5, 2021
We have three senior cats that we started giving GlycoFlex to a few weeks ago when we noticed that one of them was moving a little slow. Since giving them these chews they seem to have more energy and are moving so much better. We have started to call them jumping meds - the cats are exploring places much higher than they used it.
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If the cat likes them, they're terrific
By Linda on Nov 24, 2020
I have 2 cats. Both getting older. The girl loves these, She does not yet have apparent discomfort from arthritis, but is getting up in age. These are too big and difficult to chew so I break them up to offer as treats and I crumble it into wet food. We're about 6 weeks in and what I have noticed is improvement in her fur which I was not expecting. Much softer, less prone to clumping. She does seem to be bathing more, so maybe she did have some joint stiffness that has been improved and resulted in better fur hygiene. Unfortunately her brother, who is bothered by arthritis, won't touch them. Won't even try them, and if crumbled into his food he won't eat it. The only reason for 3 stars I have 2 cats. Both getting older. The girl loves these, She does not yet have apparent discomfort from arthritis, but is getting up in age. These are too big and difficult to chew so I break them up to offer as treats and I crumble it into wet food. We're about 6 weeks in and what I have noticed is improvement in her fur which I was not expecting. Much softer, less prone to clumping. She does seem to be bathing more, so maybe she did have some joint stiffness that has been improved and resulted in better fur hygiene. Unfortunately her brother, who is bothered by arthritis, won't touch them. Won't even try them, and if crumbled into his food he won't eat it. The only reason for 3 stars instead of more is that apparently taste acceptability is a potential issue. … more
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A GREAT product for your pets!
By Cari on Dec 13, 2020
My cat was born with a lot of issues and was put on GlycoFlex was day one. I was told she would probably live a normal life for maybe 7 years. I am proud to say Cari is going on 12 and still has no issues to stop her from being a normal active kitty and is still on GlycoFlex.
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Product seems to help, but only one month in :)
By Rosie on Sep 27, 2020
My cat is 17 years old so I have been worried about her joints with increasing age. She was a little hesitant jumping places sometimes but now she seems to not mind it as bad. While I don't know exactly how far she will be helped with only one month or treatment so far, she LOVES the treats regardless. She actually will RUN for them. It's adorable! The only thing I would recommend is maybe tearing up the bites for the cat some. It's just kinda large and she had trouble chewing the whole thing at once. It seems like if you didn't at least split it in half they could choke on it. However with splitting it she thinks sometimes she is getting more and gets happy so thats just fine!
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Eldercat Bonus for Joint Pain
By Shanny78 on Oct 25, 2020
One of my eldest cats Tobey, has significant lower body joint pain, especially his hips. He is 10 yrs old. These chews have made such a difference in his quality of life. He loves the taste of them & knows exactly what they are when I just shake the bag. So thankful to locate an option for pain relief for him.
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I had high hopes, but
By KABL on Nov 21, 2020
Neither cat will touch these. They both took them once, and after that can’t be enticed to eat even after dipping in a favorite food. Also, these are marketed for cats and dogs, but they are clearly made for dogs—the chews are huge!
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Great supplement
By Works on Oct 29, 2020
I have used this product for my older dogs and have recently adopted a stray cat who has front leg deformation, our veterinarian recommended a supplement, I tried this first b/c of the results with my dogs. He eats it every day and has started to move around and play more after 2weeks.
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Hope that my cats would benefit
By Bootsie on Nov 24, 2020
I had hopes that my cats would like these, but they did not. I do recommend you try them for your cat's health. I will keep breaking the bits in two, might make it easier for them to chew.
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My cat won't eat them
By Alex on Jan 10, 2021
These are rather large in size and my cat just wouldn't eat them, no matter how I tried to give them to him.