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
  • Weight
    15.34 ounces
  • Breed Size
    All Breeds, Small Breeds, Medium Breeds, Large Breeds
  • Lifestage
    Senior, Adult, All Stages
  • Made in
    United States
  • Supplement Form
    Soft Chew

Nutritional Info


Active Ingredients: (Per 2 Chews) Glucosamine HCl (Shrimp and Crab) (1,000 mg), Methylsulfonylmethane (MSM) (1,000 mg), Perna Canaliculus (Glycomega Brand Green Lipped Mussel) (600 mg), N,N-Dimethylglycine HCl (D mg), (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.

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

455 reviews 455 Reviews 4.6 out of 5 Stars

94% Recommend

94% of reviewersrecommend this product

4.6 / 5

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  • Time Machine in a Bag!

    By on

    Our Maddie had become slow and sometimes had problems standing. When talking with Doug, he mentioned GlycoFlex might be helpful, so I ordered the bag and am so glad I did! Within two days of taking GlycoFlex, Maddie not only has more mobility and is surer on her feet, but she's also more of her old self! She has her prancy walk back, is constantly wagging her tail, and is even starting to play again. There's no problem getting her to eat the chews, they're just another treat to her. I am so glad Doug made the suggestion!

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  • Glycoflex Joint support

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    Maybe my dog is finicky, which in her senior years, she's probably getting to be, but she did not like these at all. She has eaten only one since getting these on Feb. 1. I've doused them in chicken broth etc. to get her to eat them, but to no avail. There's something in the taste that's turning her away. I'm sure they're good for her and will help her if she can get past the taste. Sorry, wish I could be more positive but she's not eating them.

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  • My GSD loves the taste

    By on

    My 10 year old GSD is getting very slow to get up and I have tried other supplements. I read the reviews on the Glycoflex and thought I would try it. He has been on it about 2 weeks now and I do see an improvement. One of my friends that came over this weekend also noticed an improvement in him so I know it isn’t just me. The other great thing is that Harley loves these so I don’t have to fight with him to take it.

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  • Review GlycoFlex Joint Support

    By on

    I was buying a product from another company who changed their formula and my dogs spit it out! I chatted with a Chewy's rep and decided on this product. My dogs love it and wait by the counter every morning get their "pill". It's little larger than a pill but they think it's a treat. As usual Chewy's came to the rescue.

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  • My vet recommended

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    This is one of 3 glycocemin products my vet recommended for our two Seniors. I am giving it a 4 star for one reason only “ the chewable sin a shape of a bone are a little hard !” The Value bag is of a fair price 280 count Taste and smell : my dogs love it

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  • Tastes Great!

    By on

    My otterhound, Chance, loves the flavor of the Glycoflex Stage III Ultimate Strength Joint Support Chews, but he's only been on them a week. Too soon to say whether or not they do what they are supposed to. I'm hopeful. I trust Chewy to have quality products.

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  • Love this product

    By on

    I have a 10 year old Australian shepherd she is a working dog. She does dock diving most but does a lot of other dog sports. I have been giving her Glyco flex for just over a month she acts like a 10 month old pup and not a 10 year old. She eats the chews right up so I know she is getting all of what she needs. my younger working dogs who are fussy about treats love them also. I recommend it to some friends with older dogs with some joint issues starting they got it and love it also. Best thing I could of given my dog.

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  • I think this is actually work!

    By on

    I have a 52lb pitbull. A year ago she hurt her leg and she was limping very bad. Vet told me she tore her ACL and she needs a surgery. I googled around and find out that most dogs dont really need a surgery, just relax for couple months. After few months she was still limping on and off and also she had a clicking sound coming from her knee. I start give her this product, didnt let her run, no walks, no stairs, and no jump on sofa and bed. After few months, there is no clicking sound and she dont limp any more. Now, she is running on the yard like a puppy again! I believe this product helped a lot! I am giving her this supplement on daily basis and will keep continue.

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  • Joint Support

    By on

    We have an older puddle mixed dog and she is having lots of back hip problems, she has been taking this about 2 weeks and seems to be doing better, doesn't yelp when she jumps up in the chair as she use to. Hope this will continue to help her.

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  • Amazing Product

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    I have 4 older dogs that I am feeding this product to. I have seen an improvement in all 4 dogs. All of the dogs think this is a tasty treat and consume with no problems at all. We definitely keep using this product.

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