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VetriScience GlycoFlex Stage III Ultimate Strength Joint Support Bite-Sized Dog Chews, 120 count

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Clinically Proven GlycoFlex III Hip and Joint Supplement for Dogs represents the third stage of VetriScience Laboratories’ comprehensive joint support program designed to maintain comfort and mobility through all stages of your dog’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 is suggested for active and competitive dogs to maintain top form, but also provides support for dogs showing signs of aging and discomfort as well as those with limited mobility after orthopedic surgery.

Key Benefits

  • Veterinarian approved canine joint support with perna, glucosamine, MSM, DMG, and antioxidants for advanced joint support
  • Recommended for dogs with a maximum need to joint and connective tissue support, joint and connective tissue support, geriatric and working dogs as well as to support normal recovery after orthopedic surgery
  • Great for dogs of all weight ranges to maintain comfort and mobility through all stages of your dog’s life
  • Clinically proven to increase hind leg strength in dogs by up to 41% in 4 weeks
  • Bite-sized soft chews are naturally flavored with real chicken so it’s easy to keep even picky pups healthy

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

Nutritional Info


  1. Active Ingredients Per 2 Chews: Glucosamine HCl (Shrimp and Crab) (1000 mg), Methylsulfonylmethane (MSM) (1000 mg), Perna Canaliculus (Glycomega Brand Green Lipped Mussel) (600 mg), N,N-Dimethylglycine HCl (DMG) (100 mg), Dl-Alpha Tocopheryl Acetate (Vitamin E) (50 Iu), Ascorbic Acid (Vitamin C) (24 mg), Manganese (as Mn Proteinate) (10 mg), Grape Seed Extract (5 mg), L-Glutathione (2 mg), Selenium (as Sodium Selenite) (0.002 mg), Inactive Ingredients: Brewers Yeast, Canola Oil, Chicken Liver Flavor, Citric Acid, Glycerin, Mixed Tocopherols, Propionic Acid, Proprietary Blend (Maltodextrin, Sodium Alginate and Calcium Sulfate), Rosemary Extract, Silicon Dioxide, Soy Lecithin, Vegetable Oil, Whey (Glycomega Is A Trademark of Aroma New Zealand Ltd.).

Feeding Instructions

Initial feeding period (4-6 weeks):

  • Up to 30 lbs: 1 chew daily
  • 31-60 lbs: 2 chews daily
  • 61-100 lbs: 4 chews daily
  • 101 lbs and over: 5 chews daily

Maintenance period:

  • Up to 30 lbs: 1 chew every other day
  • 31-60 lbs: 1 chew daily
  • 61-100 lbs: 2 chews daily
  • 101 lbs and over: 3 chews daily

If giving more than 1 chew daily, divide between morning and evening feedings.

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Clinically Proven Joint Support

GlycoFlex gives your dog 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 1 s a great proactive joint supplement for growing and active dogs.

GlycoFlex 2 has higher levels of glucosamine and is recommended for adult or maturing dogs.

GlycoFlex 3 is an extra-strength formula for dogs in need of maximum joint support.

GlycoFlex Classic is an introductory hip and joint health supplement that supports proper joint and connective tissue growth and function in dogs of all ages.

GlycoFlex Plus provides advanced support to help cushion joints, promote cartilage building and alleviate discomfort caused by normal daily activities.

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

302 reviews 302 Reviews 4.6 out of 5 Stars
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95% Recommend

95% of reviewersrecommend this product

4.6 / 5
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  • worked wonders for my lab

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    this made such a difference for my old girl. before it, her back legs were so stiff she could barely move them and had a lot of trouble getting up. after taking this for about 2 weeks, i really noticed a difference with how well she was getting around. yesterday i even took her swimming :-) i will continue to buy this item for her. for reference, i have a 12 yr old black lab.

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  • This works like magic

    By on

    my elders and my 6 year old akita, who has hip dysplasia, are all using this product. Our vet initially was the one who told me about this product, so I paid a lot from him to test my dog on it. It worked like magic. My Akita had been in so much pain, from the cold he could not get up on the bed. After giving him this product he was like a puppy again. I then gave it to my 3 elders. Again they are playing and moving so much better. Chewy's is the only way I can afford to give my dogs this product. Thank you so much for keeping the price on this low so I can get this for my dogs.

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  • Chewy is really fast

    By on

    My comment is more about Chewy than the product. This product is familiar to me and I obviously like it for my aging dogs.. This is my fourth order and I am impressed with how fast the delivery reaches me. Your pricing is very competitive and the free shipping is icing on the cake. I think I will be dealing with Chewy for some time... ( I have a rather large number of animals both house companions and barn creatures.) William T

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  • Relieved my dog can take them...

    By on

    My 98 lb. mixed breed shelter rescue has severe food allergies and is on a very strict hypoallergenic diet. He is 6 1/2 yrs old now and the vet recommended this product for his joint health. He is just beginning to show some stiffness in his hind leg and hip joints. I am very happy to report he has gobbled them up with his meals for two weeks now and his skin still looks great! And thanks to Chewy, they cost considerably less than at my vet's office, so I can give them to both my large dogs daily.

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  • Had high hopes

    By on

    Purchased this to see if it will help my 15 year old pup's joints and mobility. He has taken another supplement with no noticeable improvement. We decided to try this product to see if there was any improvement. Haven't seen any change in functioning and he doesn't like the taste and now doesn't really want it but will eat it if my other dog is there.

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  • Seems to help

    By on

    I have a 3 year old Lab whose hips bother her a lot. I've given her this for about 3 months and she seems to respond well. She doesn't limp around as much after activity. I ran out briefly for a couple weeks and I could really tell she was hurting again. So we've been taking it ever since!

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  • I'm always a skeptic.....

    By on

    ..... but this Glyco Flex III works. I have a 10 year old (Helen) and an 8 year old (Levi)pit bull. Originally I began this for the 8 year old when he had a partial tear of his ACL. Helen was jealous of this "treat" he received, so I started giving them to her as well. I noticed not only did Levi begin to improve, but Helen became less and less stiff and lost the mild arthritic limp she had been developing. I I will admit Levi doesn't love the taste of these. So...I break them in half and hand feed them to him with a smear of cream cheese. Works every time.

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  • Renewed Husky

    By on

    I was very skeptical at first but after the 30 days my 11 year old Siberian husky has been more vibrant than ever. She has more energy, running around playing with her toys and just that spark back her eyes. Love this stuff I've purchased 2 more bags!!!! Highly recommend.

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  • Glycoflex chews

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    Neither of my boys likes the flavor of the chews. My Frenchie tolerates it if I break it up in to small pieces with his kibble. However, my Bulldog really does not want to eat his kibble with the chews mixed in with it. I am still trying to find a way to get him to eat it. It won't do any good if I can't get them to take it! I am still hopeful, as many of the review I read felt it was a good product. I'm going to keep trying!

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  • Great product and my picky pug loves it

    By on

    My pug was limping terribly. The vet said she needs glucosamine. I've tried several products and she hated them all. VetriScience GlycoFlex is loaded with glucosamine and she loves it. My vet suggested giving it to her daily and she's doing a lot better. The limp is practically gone.

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