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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

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.

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.

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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 3.8 out of 5 by 42.
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 Great results if your cat will eat them My 16 year old kitty has been limping for a while and avoiding anything where she has to jump. She doesn't pill easily so I bought these treats for her. I know some cats won't eat them but I got lucky with her. I gave her one in the morning and one in the evening (breaking them into smaller bites, as they're a little on the large side). After about 3 weeks, I found her on the top platform of the 6 ft cat tree. I'm not saying it's a miracle product, as she still has arthritis, but she definitely feels better and will try to jump and play more now.
Date published: 2017-02-24
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 5 out of 5 by from my picky 14 yr old cat loves it I bought this for my 14 yr old cat who was starting to have trouble getting around like could not jump on our bed to cuddle with us at night. She has loved them from the start -even reminds me when she should get them- and I am starting to see an improvement in her arthritis ...moving around more easily and able to jump on the couch and our bed.
Date published: 2017-03-03
Rated 2 out of 5 by from Must taste yucky My cat does not like these at all. I force them down in hopes they will make her feel better.
Date published: 2017-02-20
Rated 1 out of 5 by from Unable to give an opinion Unfortunately the cat that I was going to give this to died last week. So I had no chance to evaluate this product.
Date published: 2017-02-27
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
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