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  • Flexi-K9 Max Strength Multibuy - 5 Pouches

    Created by vets and trainers.
    Keeps dogs active, strong, and flexible.
    Natural joint health superfood.
    Supports anti-inflammatory processes.
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      Our cutting-edge canine joint and mobility supplement is bursting with superfoods formulated to help dogs flex!

      Flexi-K9 Max Strength naturally combats the wear and tear of age by keeping joints nourished and bones strong, while maintaining mobility, easing stiffness and protecting, supporting and promoting joint wellness for dogs as they grow and age (from 6 months onward).

      • Helps to reduce inflammation and lubricate stiff joints.
      • All-natural active ingredients support dogs of all ages to lead more active, longer, happier and healthier lives.
      • Easy to feed with just a daily scoop mixed in food.

      How will a natural mobility support and joint wellness supplement like Flexi-K9 Max Strength help my dog?

      +

      Just like humans, as our dogs age, their joints age too. And once one joint is stiff, our dogs start to move differently, increasing the wear and tear on their other joints, so those become stiff too.

      So often, older dogs - and even younger dogs who have sustained injury, or those with a disability - find themselves in a vicious cycle of stiffness and reduced movement, and then, the less they move, the stiffer they become!

      Seeing our dogs struggle with mobility and grow older is hard. That’s why our team of vets and expert nutritionists put their heads together to create a joint supplement bursting with active ingredients to not only support the natural production of joint lubricant, but also to boost the body’s own anti-inflammatory processes!

      Whether you’re protecting your dog’s joints as a puppy (6 months and older) or supporting them as they age, adding Flexi-K9 Max Strength to their diet will help keep them moving, strong and flexible – for as long as possible!

      Is this dog supplement suitable for all breeds, ages and sizes of dog?

      +

      Yes! Flexi-K9 Max Strength is recommended for all dogs. The only thing that affects the daily dosage of Flexi-K9 Max Strength is your dog’s size. See our feeding info chart for more details.

      What is in Flexi-K9 Max Strength?

      +

      Flexi-K9 Max Strength is packed with joint-loving, movement-supporting ingredients, all chosen to help your dog stay active, comfortable, and ready for everyday adventures.

      Each scoop delivers a powerful blend of:

      Glucosamine HCl – one of the most trusted ingredients for joint care and cartilage support

      Green Lipped Mussel – rich in Omega 3s to help manage stiffness and support joint lubrication

      Boswellia Serrata – a natural plant extract known for its anti-inflammatory benefits

      Fish Oil Powder – a source of healthy fats that supports mobility and joint comfort

      Hemp Protein – plant-based support for muscle and tissue recovery

      Collagen – helps support joint structure, skin, and coat health

      Turmeric & Bioperine – natural antioxidants to help manage inflammation, with Bioperine enhancing absorption

      Chicken flavour – for a taste dogs love (no fuss at mealtimes!)

      It’s a daily scoop of proactive joint care for dogs of all ages — especially active dogs, large breeds, or seniors who need extra joint TLC.

      Supplement Composition per 1g
      Glucosamine HCI 100mg
      Green Lipped Mussel 80mg
      Turmeric 40mg
      Boswellia Serata 40mg
      Fish Oil Powder 40mg
      Hemp Protein 40mg
      Collagen 40mg
      Ascorbic Acid 20mg
      Bioperine 2mg

      My dog is on a special diet. Can they still have this?

      +

      Yes! This works with any diet. The formula is gluten free and is designed to assist your dog’s gut – not upset it!

      How do I give this supplement to my dog?

      +

      We’ve produced Flexi-K9 Max Strength as a powder supplement so it can easily be added to your dog’s daily food. Simply measure and mix! We love to spread ours on K9-Calm Mats for an extra calming boost.

      Is there any research that suggests that Flexi-K9 aids joint health?

      +

      Flexi-K9 Max Strength contains a blend of ingredients designed to support joint health and reduce symptoms of osteoarthritis in dogs:

      Green Lipped Mussel

      Clinical studies have demonstrated its beneficial effects on movement and its ability to reduce signs of osteoarthritis [1].

      Omega-3

      Omega-3 fatty acids are believed to reduce the levels of pro-inflammatory substances and cartilage-damaging enzymes in the body, supporting joint health [2].

      Turmeric

      Studies suggest that curcumin, a compound found in turmeric, acts as a powerful anti-inflammatory agent for dogs suffering from osteoarthritis [3, 4].

      Boswellia

      In humans with osteoarthritis, research indicates that Boswellia may:

      • Relieve pain and stiffness.
      • Improve joint function.
        Studies also suggest that Boswellia helps prevent the deterioration of cartilage and joint tissue [2, 5-7].

      References:

      1. Bierer TL, Bui LM. Improvement of arthritic signs in dogs fed green-lipped mussel (Perna canaliculus). J Nutr. 2002 Jun 1;132(6):1634S-6S.
      2. Additional references needed for completion.

      Can I feed Flexi-K9 Max Strength to my dog when on prescription medication?

      +

      Because the ingredients in our supplements are all-natural and have been formulated by vets and nutritionists, they can usually be used in conjunction with prescription medication. We would always recommend that you consult with your vet before changing your dog’s diet if your dog is on prescription medication.

      Is Flexi-K9 Max Strength suitable for my dog who has arthritis?

      +

      Yes, Flexi-K9 Max Strength is suitable for dogs who have mobility issues. It contains specific ingredients like Green-lipped mussel and turmeric to support healthy joints.

      Is there chicken in Flexi-K9?

      +

      No! While the Flexi-K9 Max Strength powder has a tasty chicken taste, the flavouring we use is totally vegetarian and chicken is not included in Flexi-K9 Max Strength.

      Flexi-K9 Max Strength Multibuy - 5 Pouches

      As Seen In

      Better Health. Happier Dogs.

      Support your dog’s wellbeing with all-natural superfood support,expertly made dog health & wellbeing products.

      Made By
      Experts

      Our products have been formulated by our team of vets, champion trainers and nutritionists.

      Natural Quality
      Ingredients

      All of our products are 100% natural, non-sedative and supported by research.

      Superfood
      Innovation

      A powerful powder supplement that fits easily into your dog’s mealtime routine.

      Our Quality Ingredients Include:

      Formulated By Canine Nutritionists

      • Created by vets and trainers.
      • Keeps dogs active, strong, and flexible.
      • Natural joint health superfood.
      • Supports anti-inflammatory processes.

      Turmeric

      40mg

      Science has proven that turmeric supports the natural anti-inflammatory processes within the joint and promotes joint wellness generally in dogs of all ages.

      Turmeric

      Omega-3 Fish Oil

      40mg

      Fish oil powder has been shown to support dogs’ hearts, joints, immune system, skin and coat! Dogs can’t produce omega-3 fatty acids on their own and must get them from their diet.

      Omega-3 Fish Oil

      Green Lipped Mussel

      80mg

      Rich in omega-3 fatty acids, minerals, essential amino acids and glycoproteins, this mighty mollusc also contains natural chondroitin - a powerful combination which supports and promotes joint health in all ages.

      Green Lipped Mussel

      What Makes A-OK9 Products Different?

      Smarter Dog Health and Wellbeing Starts Here
      Crafted by vets, behaviourists, and nutrition experts, A-OK9 delivers science-backed, all-natural superfood blends designed to support health, behaviour, and longevity—without the fillers or fuss.

      Checkmark icon

      All-Natural Superfood Blends

      No fillers or artificial nasties

      Checkmark icon

      Targeted Health Support

      For calm, joints, digestion & more.

      Why choose Flexi-K9 Max Strength?

      Easy daily scoop
      All-natural ingredients
      Vet-approved formulations
      No fillers or artificial additives
      Made in the UK

      All Your Frequently Asked Questions - Answered!

      How will a natural mobility support and joint wellness supplement like Flexi-K9 Max Strength help my dog?

      +

      Just like humans, as our dogs age, their joints age too. And once one joint is stiff, our dogs start to move differently, increasing the wear and tear on their other joints, so those become stiff too.

      So often, older dogs - and even younger dogs who have sustained injury, or those with a disability - find themselves in a vicious cycle of stiffness and reduced movement, and then, the less they move, the stiffer they become!

      Seeing our dogs struggle with mobility and grow older is hard. That’s why our team of vets and expert nutritionists put their heads together to create a joint supplement bursting with active ingredients to not only support the natural production of joint lubricant, but also to boost the body’s own anti-inflammatory processes!

      Whether you’re protecting your dog’s joints as a puppy (6 months and older) or supporting them as they age, adding Flexi-K9 Max Strength to their diet will help keep them moving, strong and flexible – for as long as possible!

      Is this dog supplement suitable for all breeds, ages and sizes of dog?

      +

      Yes! Flexi-K9 Max Strength is recommended for all dogs. The only thing that affects the daily dosage of Flexi-K9 Max Strength is your dog’s size. See our feeding info chart for more details.

      What is in Flexi-K9 Max Strength?

      +

      Flexi-K9 Max Strength is packed with joint-loving, movement-supporting ingredients, all chosen to help your dog stay active, comfortable, and ready for everyday adventures.

      Each scoop delivers a powerful blend of:

      Glucosamine HCl – one of the most trusted ingredients for joint care and cartilage support

      Green Lipped Mussel – rich in Omega 3s to help manage stiffness and support joint lubrication

      Boswellia Serrata – a natural plant extract known for its anti-inflammatory benefits

      Fish Oil Powder – a source of healthy fats that supports mobility and joint comfort

      Hemp Protein – plant-based support for muscle and tissue recovery

      Collagen – helps support joint structure, skin, and coat health

      Turmeric & Bioperine – natural antioxidants to help manage inflammation, with Bioperine enhancing absorption

      Chicken flavour – for a taste dogs love (no fuss at mealtimes!)

      It’s a daily scoop of proactive joint care for dogs of all ages — especially active dogs, large breeds, or seniors who need extra joint TLC.

      Supplement Composition per 1g
      Glucosamine HCI 100mg
      Green Lipped Mussel 80mg
      Turmeric 40mg
      Boswellia Serata 40mg
      Fish Oil Powder 40mg
      Hemp Protein 40mg
      Collagen 40mg
      Ascorbic Acid 20mg
      Bioperine 2mg

      My dog is on a special diet. Can they still have this?

      +

      Yes! This works with any diet. The formula is gluten free and is designed to assist your dog’s gut – not upset it!

      How do I give this supplement to my dog?

      +

      We’ve produced Flexi-K9 Max Strength as a powder supplement so it can easily be added to your dog’s daily food. Simply measure and mix! We love to spread ours on K9-Calm Mats for an extra calming boost.

      Is there any research that suggests that Flexi-K9 aids joint health?

      +

      Flexi-K9 Max Strength contains a blend of ingredients designed to support joint health and reduce symptoms of osteoarthritis in dogs:

      Green Lipped Mussel

      Clinical studies have demonstrated its beneficial effects on movement and its ability to reduce signs of osteoarthritis [1].

      Omega-3

      Omega-3 fatty acids are believed to reduce the levels of pro-inflammatory substances and cartilage-damaging enzymes in the body, supporting joint health [2].

      Turmeric

      Studies suggest that curcumin, a compound found in turmeric, acts as a powerful anti-inflammatory agent for dogs suffering from osteoarthritis [3, 4].

      Boswellia

      In humans with osteoarthritis, research indicates that Boswellia may:

      • Relieve pain and stiffness.
      • Improve joint function.
        Studies also suggest that Boswellia helps prevent the deterioration of cartilage and joint tissue [2, 5-7].

      References:

      1. Bierer TL, Bui LM. Improvement of arthritic signs in dogs fed green-lipped mussel (Perna canaliculus). J Nutr. 2002 Jun 1;132(6):1634S-6S.
      2. Additional references needed for completion.

      Can I feed Flexi-K9 Max Strength to my dog when on prescription medication?

      +

      Because the ingredients in our supplements are all-natural and have been formulated by vets and nutritionists, they can usually be used in conjunction with prescription medication. We would always recommend that you consult with your vet before changing your dog’s diet if your dog is on prescription medication.

      Is Flexi-K9 Max Strength suitable for my dog who has arthritis?

      +

      Yes, Flexi-K9 Max Strength is suitable for dogs who have mobility issues. It contains specific ingredients like Green-lipped mussel and turmeric to support healthy joints.

      Is there chicken in Flexi-K9?

      +

      No! While the Flexi-K9 Max Strength powder has a tasty chicken taste, the flavouring we use is totally vegetarian and chicken is not included in Flexi-K9 Max Strength.

      What Makes A-OK9 Dog Health
      & Welling Products Better

      All Natural dog supplements that do more than just support - they transform

      A-0K9 Supplements

      Powder = Higher activesTargets calm, joints, gut & moreMixes easily with raw food100% superfood ingredientsVet & behaviourist backed

      Typical Supplements

      Generic, low-potency formulasOne-size-fits-all approachMade for dry kibble mealsFull of binders, fillers & artificialsLimited proof or visible results
      Better ingredients. Smarter formulas. Real results for your dog.
      Vet Approved

      Vet Approved

      All-Natural Dog Health & Wellbeing Products

      Our dog health and wellbeing products are formulated by our team of vets, trainers and nutritionists. 100% natural, non-sedative, and backed by research.

      A-OK9 · Vet-Formulated & Research-Backed Supplements
      Vet Approved

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