







Flexx Joint Supplement
ProDog Flexx is a high-performance joint supplement for dogs, expertly formulated to support joint mobility, flexibility, and overall movement. This vet recommended joint supplement for dogs combines 11 all-active, bioavailable ingredients to help maintain healthy joint fluid, connective tissue, and musculoskeletal function. Free from fillers and packed with bioavailable natural ingredients, it’s easy to serve—simply mix into your dog’s food for everyday support that works from the inside out.
Read MorePart of our dog supplements range, Flexx is a powerful dietary addition designed to support long term joint care in dogs of all ages and breeds (from 24 weeks). Formulated by specialist canine nutritionists, this premium blend features ingredients known for their synergy in promoting joint integrity and mobility, such as green-lipped mussel, turmeric, boswellia, glucosamine, chondroitin, and MSM.
Whether supporting ongoing mobility or taking proactive steps with a nutrition led approach, Flexx delivers serious results easily. Formulated using natural anti inflammatory for dogs like turmeric and boswellia, alongside ingredients that contribute to joint lubrication, cartilage health and detox support, Flexx is the smart choice for dog owners looking for advanced dog joint supplements UK.
Innovative nutritional support for mobility, strength, and movement.
*Not a medicinal product
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Move Like A
How ProDog Flexx Works
This advanced fusion of ingredients benefits 5 key areas:

This exclusive blend of methyl-sulfonyl-methane (MSM) and hemp protein helps maintain healthy MSM levels, which is especially important as dogs age. These nutrients provide targeted support for joint function, helping to nourish connective tissues and support joint, ligament, and muscle structure. A key component of advanced joint care for dogs.
Formulated with glucosamine sulphate, marine collagen, chondroitin, and green-lipped mussel, Flexx provides important components for a nutrition led approach to joint care. These nutrients support the body’s natural formation of keratin, collagen, and elastin, key structural elements that contribute to joint strength, flexibility, and resilience.
Green-lipped mussel, boswellia, and turmeric are powerful natural ingredients known for their ability to support the body’s natural inflammatory response. This makes Flexx an ideal choice for owners seeking a natural anti inflammatory for dogs to help maintain ease of movement and flexibility, particularly in older or larger breeds.
Enriched with chlorella growth factor and nucleic acids, this formula supports immune system integrity and the body’s natural detoxification mechanisms to help reduce inflammation. These bioavailable nutrients help maintain effective immune defences, complementing Flexx’s role as a well-rounded dog joint supplement, contributing to overall vitality.
An added benefit of Flexx is that it supports skin and coat health from within. Fish collagen, hemp, and green-lipped mussel supply essential Omega 3, 6, and 9 fatty acids, which not only nourish the skin and promote coat shine but also play a key role in joint lubrication and the maintenance of connective tissues. These omegas further support brain, immune, and dog gut health for all-round vitality.
We’re so confident you’ll love our product that we are offering a 30 Day Money Back Guarantee.
Packed with natural ingredients

MSM (Methyl-Sulfonyl-Methane)

Green-lipped Mussel

Fish Collagen

Boswellia

Hemp Protein

Turmeric and black pepper

Chlorella

Chondroitin

Glucosamine Sulphate

Vitamin C

“ProDog's supplements align perfectly with my holistic approach to veterinary care, emphasizing the critical role nutrition plays in pet health.
Their expertly formulated products, created by leading canine nutritionists, offer a straightforward solution for pet parents eager to enhance their dogs' diets with scientifically-backed, superior nutrition. This resonates with my commitment to guiding pet parents towards practices that foster their pets' health and vitality. By incorporating ProDog's supplements into a holistic health regimen, pet parents can confidently support their dogs' well-being, ensuring they receive the essential nutrients needed for a thriving, joyful life.”
(BVSc, GDVCHM, CVMA)
Our Customers Love Flexx
This is an excellent product. Works quickly. Noticed a difference after just one week.
John P
It’s a really good product. My dog was limping and I had some issues with his back leg. Give him this a few times and he was back to normal
Trusted Customer
My girl has arthritis and this has really helped her
Mandy Hoad
My 11 year old border collie had an accident when he was 5. He has been given Flexx ever since then and he walks for miles with no lameness.
Wendy Bebbington

Our nearly 8 year old Labrador has been on Flexx since January, we had noticed she was stiff and hesitant to jump onto bed. On the third pot of Flexx now and she seems almost puppy like again!
Michelle Hawkins

This is an excellent product. Works quickly. Noticed a difference after just one week.
John P
It’s a really good product. My dog was limping and I had some issues with his back leg. Give him this a few times and he was back to normal
Trusted Customer
My girl has arthritis and this has really helped her
Mandy Hoad
My 11 year old border collie had an accident when he was 5. He has been given Flexx ever since then and he walks for miles with no lameness.
Wendy Bebbington
Our nearly 8 year old Labrador has been on Flexx since January, we had noticed she was stiff and hesitant to jump onto bed. On the third pot of Flexx now and she seems almost puppy like again!
Michelle Hawkins



Discover the principles that make our supplements unparalleled.
Flexx Feeding Guide

Up to 20 kg = 1 scoop per day

20kg - 40 kg = 1.5 scoops per day

40kg+ = 2 scoops per day
- Not a medicinal product
- For puppies under the age of 24 weeks, pregnant dogs or dogs on medication, please seek veterinary advice before use
- For dog consumption only
- Keep out of reach of children and other animals
- In case of accidental overfeeding, contact your local vet immediately
We recommend introducing Flexx gradually and building up to the recommended serving:
- Start with ¼ of the recommended serving for 3–4 days.
- Increase to ½ serving for 3–4 days.
- Increase by ¼ serving every 3–4 days until you reach the full recommended serving for your dog’s weight.
- Add your usual amount of wet or raw food to your dog’s bowl.
- Sprinkle in the recommended serving of Flexx joint supplement for dogs
- If combining with other ProDog dog vitamin supplements, add them now.
- Mix well until the powder is fully blended.
- Serve and let them enjoy.
- Place the dry food into your dog’s bowl.
- Add the correct serving of Flexx dog joint supplement
- Add a splash of cold water or bone broth
- Stir until the powder is fully incorporated.
- Feed as usual.
Each 4 gram scoop (1 serving) contains:
MSM (methyl-sulfonyl-methane)
Glucosamine sulphate
Hemp protein
Chlorella
Chondroitin
Turmeric
Fish collagen powder
Green Lipped Mussel
Boswellia
Vitamin C
Black Pepper
FAQs
Yes. Flexx can be safely used in combination with other ProDog products, such as:
BOOST dog multivitamin and mineral supplement
REVIVE energy support and recovery supplement for dogs
PROTECT itchy dog supplement
DIGEST dog gut health supplement
SHINE dog skin and coat supplement
REPEL natural tick, flea and worm repellent
MUSCLE+ dog weight gain supplement
PERFORM strength & stamina supplement for dogs
And our full spectrum immune supporting COLOSTRUM for dogs.
Natural variation is expected in supplements that don’t contain artificial fillers. Factors such as harvest time, weather, soil, and ingredient combinations all influence colour. This is especially true for plant based ingredients like hemp, which can range from brown to green, depending on the batch.
Joint supplements for dogs are a smart and effective way to provide preventative joint care at any life stage and targeted nutritional support for dogs experiencing stiffness, discomfort, or reduced mobility. They’re especially beneficial for large breeds, senior dogs, and those predisposed to joint issues.
ProDog Flexx, our vet recommended joint supplement for dogs, is formulated by expert canine nutritionists using powerful, https://www.prodograw.com/supplements-ingredients/. Every component is selected for its nutritional function—no fillers, no fluff. Designed for optimal bioavailability, the ingredients work in synergy and are easily absorbed by the body, supporting joint structure, flexibility, and long-term mobility. Easy to incorporate into any feeding routine, Flexx helps your dog stay active and thrive.
Adding a dog joint supplement to your dog’s diet can help maintain mobility and freedom of movement. It’s a simple, proactive step to support their overall wellbeing naturally.
Common signs your dog may benefit from nutritional joint care include:
- Difficulty getting up from rest
- Hesitation or struggle when jumping into the car or onto furniture
- Reluctance to sit or lie down (often due to joint stiffness or discomfort)
- Limping, shuffling, or bunny hopping while walking
- Excessive panting, which may indicate pain or discomfort
Always consult your vet to rule out serious conditions. While ProDog Flexx joint supplement for dogs is not a medicinal product, it does contain ingredients that are natural anti inflammatory for dogs and can be added to any diet to complement veterinary treatment.
For personalised guidance, our expert canine nutritionist is here to help. Contact us today for free, tailored advice.
Why add dog joint supplements to your dog’s feeding plan? There are several situations where nutritional joint support is beneficial:
- Large breeds are often more prone to joint issues due to their size. Dietary support helps maintain healthy joints
- Certain breed-specific conditions, like luxating patella in smaller dogs, may benefit from early joint care
- Active, heavy, or working dogs put more strain on their joints—joint supplements for dogs support cartilage strength and flexibility
- Dog arthritis supplements may help maintain comfort in dogs experiencing inflammatory conditions
As dogs age, they naturally produce fewer proteins needed to maintain joint strength. This can increase the risk of conditions like arthritis, hip or elbow dysplasia, and cruciate issues. A nutrition led joint supplement for dogs helps maintain healthy protein and molecule levels, especially important for senior dogs, sporting dogs, and those already showing signs of reduced mobility.
For personalised guidance, our expert canine nutritionist is here to help. Contact us today for free, tailored advice.
ProDog Flexx is suitable for dogs over 24 weeks of age. That’s when they begin to benefit most from the long term support offered by natural joint supplements for dogs. Starting early helps lay the foundations for a healthy, active future.
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