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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 Number
  • Food Form
  • Lifestage
    Senior, Adult
  • Made in
    United States
  • Supplement Form

Nutritional Info


  1. 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.

Feeding Instructions

Use Stage Daily Feeding
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.

Initial: (4-6 Weeks): give 2 chews per 10 lbs of body weight daily

Maintenance (after initial period): give 1 chew per 10 lbs of body weight daily.

If giving more than 1 chew daily, divide between AM and PM.

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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.

VetriScience GlycoFlex
Lifetime of Healthy Joints

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.

Time-Tested Ingredients

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.

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About VetriScience

Customer Reviews

VetriScience GlycoFlex Stage III Ultimate Strength Joint Support Bite-Sized Cat Chews is rated 3.9 out of 5 by 38.
Rated 2 out of 5 by from Cats won't eat them, treat size too big Product is as described, shipped quickly and arrived within 1-2 days. We had a lot of hopes for this product since our girls are getting on in age and showing signs. 2 main problems: 1) Cats won't eat them... they are not picky eaters either. This seems to be a hit-or-miss point with cats and very polarizing. They either love it or hate it. 2) Too big for most cats. Maine coons would find this bite size (my brother has 2), our siamese couldn't fit them into their mouth. I had to break up the treats into 4 bite-size bits. See attached image - glyco flex treats on right, for size comparison: temptations on left and american quarter in middle. The treats are very dense and square, so they're just as wide as they are tall whereas the temptations are very thin. No results to comment on since they ate half a treat on day one, a quarter of a treat on morning of day 2, and not a single bite on evening of day 2. Will continue to try and update review to reflect any changes if they occur.
Date published: 2016-08-18
Rated 5 out of 5 by from Helping My cat with arthritis is walking much better since starting this product. Sometimes he will just eat it as a treat, but being a cat sometimes not. I then just chop it fine and add it to his food. He eats it well. I recommend it!
Date published: 2017-01-05
Rated 5 out of 5 by from He will eat it! I give my cat shots for arthritis & am now adding this to help his mobility. He eats it & seems to be happier.
Date published: 2016-12-28
Rated 3 out of 5 by from NO JOY! Even thought I am diligent about reading reviews, I was on the fence here. Biggest concerns were size and texture. I started by dropping the whole treat on the floor and got a sniff. I then cut them in 1/4s and they picked it up but then spit it out. I now crush them to powder with a fork and sprinkle on their food. These are not "SOFT" chews, as the one bite my cat did take crunched. I'm looking for mush when you squeeze texture. Will keep shopping.
Date published: 2017-01-18
Rated 4 out of 5 by from Seems to be working My cat is limping a lot less. He likes the treats which I was afraid he wouldn't.
Date published: 2017-02-05
Rated 5 out of 5 by from All the right stuff in this for my old, stiff cat. and she likes it. My cat currently likes this product. I have tried two other feline glucosamine chewables. She liked the pet Naturals one for several bags and then stopped. She wouldn't touch the next one I tried. The Glycoflex is a little hard for her (she has no teeth) but i warm it in the microwave for 8 seconds and she loves it. Hope her desire lasts!
Date published: 2016-09-26
Rated 5 out of 5 by from Picky indoor cat & semi-feral outdoor cat approved! This Glycoflex chew and the Dentalife kibbles (4) are the first items our 14yo indoor cat and 12yo outdoor cat eat! They SELECT them FIRST from among their dry food kibbles! We recently began giving our aging girls these two new additions to their daily diet because of mobility & dental plaque issues. This may not seem like it is special nor unusual, BUT bear in mind that BOTH CATS are used to grain-free Chicken and grain-free Seafood high-protein dry cat food blended 50-50... not some corn/grain-filler byproduct-meal food from the grocery store!
Date published: 2016-10-09
Rated 5 out of 5 by from Product is great My neutered male cat has cistitis. This product keeps it under control. Not its original purpose perhaps, but the vet tech happened to know it works for this, too. Thank goodness, because kitty was peeing in the sink and bathtub, which I found out is what they tend to do with that condition.
Date published: 2016-10-11
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