K9 FullFlex™ – Natural joint supplement for dogs of all ages
K9 FullFlex™ is a full-spectrum, natural joint support formula for dogs. It protects cartilage and joints while also regulating the inflammatory and immune processes that affect mobility. Its powerful blend includes medicinal mushrooms, SOD enzyme, green-lipped mussel, eggshell membrane (ESM), glucosamine, chondroitin, colostrum, and Boswellia. Each ingredient works on a different level – to reduce pain, repair tissues, and restore freedom of movement.
The goal is simple: to help your dog stay mobile, or regain what pain has taken away.
K9 FullFlex™ is not just for dogs already struggling with joint pain. It’s also ideal as a daily preventive – even for younger, active dogs. Safe for long-term use, it offers gentle yet effective support thanks to its carefully selected, naturally sourced ingredients.
Comprehensive support for pain-free movement
What makes K9 FullFlex™ truly special is its multi-directional action. It doesn’t just address one symptom – it works to strengthen joint structure, reduce inflammation, relieve pain, and boost immune function all at once. Ingredients like SOD enzyme, ESM, green-lipped mussel, glucosamine, medicinal mushrooms, colostrum, and calcium work together to support the health of cartilage, ligaments, and bones – both at the cellular and functional level.
Want to learn more about each ingredient? See the “Ingredients” section for a full breakdown.
When is K9 FullFlex™ recommended?
- If your dog struggles to move, limps, or gets up with difficulty
- To support joint health in cases of arthritis, cartilage wear, or dysplasia
- As a preventive for active, sporting, or working dogs
- For senior dogs to help maintain mobility and comfort
- After injury or surgery to support recovery and regeneration
- If you’re looking for a natural alternative to pain medications
What makes it different?
- Comprehensive formula with synergistic active ingredients – all in one chew
- Inflammation relief with SOD enzyme, medicinal mushrooms, and Boswellia
- Joint and cartilage protection with glucosamine, chondroitin, and ESM
- Natural pain relief with green-lipped mussel and Boswellia
- Immune support with colostrum, calcium, and medicinal mushrooms
- Delicious taste with liver powder and beef flavor – dogs love it
Who is K9 FullFlex™ for?
This formula is suitable for dogs of all ages who need joint and mobility support – especially:
- Dogs already showing signs of joint pain or stiffness
- Active, working, or athletic dogs with high physical demands
- Dogs with a genetic predisposition to joint issues – for early prevention
- Dogs recovering from injury or surgery
- Owners seeking a natural solution instead of long-term medication
Do any of these sound familiar?
- “My dog doesn’t run like he used to.”
- “After walks, he seems tired and takes longer to recover.”
- “I’m worried dysplasia will affect his quality of life.”
- “I want to support his joints the natural way.”
- “We’ve tried different things – now we’re hoping for a breakthrough.”
If any of these feel familiar, K9 FullFlex™ was made for your dog.
Why start early?
Joint damage doesn’t happen overnight – but with the right support, you can slow it down. With K9 FullFlex™, you’re not just easing symptoms. You’re actively improving your dog’s mobility and comfort – day by day.
Your dog can’t speak – but you can act. Start today and see the change.
What makes K9 FullFlex™ unique?
K9 FullFlex™ is a targeted formula designed to support joint health on multiple levels. It helps reduce inflammation, protects joints, and promotes regeneration – all using natural, highly bioavailable ingredients in a delicious soft chew format.
Its effectiveness comes from clinically studied active ingredients like glucosamine, chondroitin, green-lipped mussel, eggshell membrane (ESM), colostrum, medicinal mushrooms, Boswellia serrata, and hyaluronic acid. Together, they don’t just relieve symptoms – they restore comfort and ease of movement, often with noticeable results in just a short time and without side effects.
Ingredients – 1 soft chew = 4000 mg
Glucosamine sulfate
Glucosamine is one of the body’s natural building blocks for cartilage. It improves joint fluid quality and promotes cartilage regeneration. Each chew provides 250 mg of highly bioavailable glucosamine.
Key benefits:
- Supports cartilage formation
- Improves joint lubrication
- Helps relieve pain and stiffness
Recommended for:
- Cartilage wear and tear
- Age-related joint problems
- Joint support for active or sporting dogs
Chondroitin sulfate
Each chew contains 200 mg of chondroitin sulfate to help retain water in the cartilage, slow down degeneration, and ease joint inflammation – all in a natural, well-tolerated way.
Key benefits:
- Increases water retention in cartilage
- Relieves joint discomfort
- Reduces inflammation
Recommended for:
- Osteoarthritis
- Mobility issues in older dogs
- Preventing joint inflammation
Green-lipped mussel extract
Rich in glucosamine, omega-3 fatty acids, and proteins, green-lipped mussel supports joint flexibility and helps regulate inflammation naturally. Each chew delivers 185 mg of this joint-friendly extract.
Key benefits:
- Helps manage joint inflammation
- Protects cartilage
- Promotes smooth, flexible movement
Recommended for:
- Arthritis
- Joint pain or stiffness
- Post-surgical recovery
Eggshell membrane (ESM)
A natural source of collagen, glucosamine, and elastin – all essential for joint elasticity. With 100 mg per chew, ESM helps support the strength and flexibility of joints and ligaments.
Key benefits:
- Provides collagen and elastin
- Strengthens joint and ligament structure
- Supports flexible movement
Recommended for:
- Joint degeneration
- Recovery from injuries
- Prevention for active dogs
Colostrum
Each chew contains 25 mg of freeze-dried, premium colostrum – a natural immune booster that supports cellular repair and helps protect joint tissues from inflammation.
Key benefits:
- Boosts immune response
- Reduces inflammation
- Promotes tissue regeneration
Recommended for:
- Recovery periods
- Chronic joint inflammation
- Supplemental support for allergies
Medicinal mushroom blend
A 600 mg blend of carefully selected mushrooms (Reishi, Shiitake, Maitake, Cordyceps, Agaricus, Turkey Tail) that help regulate inflammation and balance immune function.
Key benefits:
- Immune-modulating effects
- Natural inflammation control
- Provides antioxidant protection
Recommended for:
- Autoimmune-related joint inflammation
- Age-related joint issues
- Periods of physical recovery
Boswellia serrata extract
This 70 mg natural extract is known for relieving pain and inflammation without side effects. It’s an excellent choice for long-term joint care and comfort.
Key benefits:
- Reduces pain perception
- Helps manage inflammation
- Improves joint mobility
Recommended for:
- Chronic joint inflammation
- NSAID replacement or support
- Mobility problems in senior dogs
Hyaluronic acid
Each chew contains 10 mg of high-purity hyaluronic acid, which acts as a natural lubricant to reduce friction and support smoother movement in stiff or aging joints.
Key benefits:
- Improves joint lubrication
- Protects cartilage from wear
- Relieves joint stiffness and inflammation
Recommended for:
- Dry or stiff joints
- Cartilage wear and tear
- Joint protection for senior dogs
Important note
The natural ingredients in this product are selected based on traditional use, published scientific data, and years of veterinary experience. This supplement is not a medicine and should not replace professional veterinary diagnosis or treatment. Always consult your veterinarian, especially if your dog has a chronic condition or is currently on medication.
Daily dosage
K9 FullFlex™ comes in tasty soft chew form, making it easy to give as a treat or mixed into your dog’s food. You can offer it directly or hide it in their meal – either way, most dogs love the flavor.
Recommended daily dosage by body weight:
- Dogs under 18 kg (40 lbs): 1 soft chew daily – approx. 60 days per pouch
- Dogs over 18 kg (40 lbs): 2 soft chews daily – approx. 30 days per pouch
Adjust the dosage according to your dog’s weight, age, and joint condition. For more severe issues, you can start with a higher dosage (2 chews even under 18 kg) for the first 4-6 weeks, then switch to a maintenance dose.
Note: Consistent daily use helps the active ingredients build up in the body and deliver long-lasting effects. This product is safe for long-term use.
Certifications
The K9 INU®, K9 INUFactor®, K9 INUExtra®, K9 INUFlex® products are made in Hungary from carefully selected American and European ingredients, adhering to strict manufacturing regulations. They are certified by the National Food Chain Safety Office for K9-Immun Kft. as “other therapeutic products.” More information ›
K9 Immunity™ and K9 Immunity Plus™ are made from 100% USDA (US Department of Agriculture) and EU Certified Organic approved ingredients, manufactured to strict GMP (Good Manufacturing Practice) standards and FDA (US Food and Drug Administration) recommendations. Made from all-natural, non-toxic, 100% certified pure ingredients by Aloha Medicinals Inc. In Hungary, it is certified as “other medicinal preparation” by the Agricultural Administration Office, issued to K9-Immun Ltd. More information ›
Shipping
Delivery by the GLS courier service. More details »
Payment
You can securely settle the purchase price of products via credit card through CIB Bank. More details »
Alternatively, you can pay through PayPal. You can log into your PayPal account in our payment interface or, if you don’t have an account, enter your credit card details on the PayPal platform. More details »
Have a question about this product? We can help! Contact us and we will answer your questions quickly!
Kalló Hajnalka (verified owner) –
It was not the first time I used it on my 15-year-old dysplasic vizsla. When it was unavailable, I tried to replace it with another product, but none came close. I don’t know if it’s the incense or some other ingredient that works so well, but after two days the dog’s mood and condition improved dramatically. He is running around like new 😀. Not cheap, but I wouldn’t change it for anything else. I heartily recommend it.
Sophia (verified owner) –
Excellent product! I recommend it to everyone whose pet has dysplasia. Nothing else worked for us.
Ludovica (verified owner) –
All’inizio ero riluttante a comprare il vostro prodotto chiamato K9 Fullflex a causa del prezzo relativamente alto, ma ora non lo cambierei con nient’altro, perché ha SUPERATO TUTTE LE MIE ASPETTATIVE!
Ecco la nostra storia per dimostrarlo:
Il mio Labrador, che ha quasi 11 anni, ha avuto molti problemi muscolo-scheletrici fin da cucciolo, e poiché questi si sono accumulati nel tempo, gli interventi chirurgici hanno avuto un effetto minimo. Ha una grave displasia dell’anca, del gomito e del ginocchio, una colonna vertebrale rigida (bamboo spine) e un’ernia cervicale. Per questo ho provato moltissimi prodotti che potessero aiutarlo, persino steroidi e antidolorifici potenti, che però gli hanno causato problemi agli organi interni e, per di più, non avevano più un effetto significativo. Davvero, niente lo aiutava.
Non giocava, non correva e non si divertiva con il nostro altro cane da 3 anni, quando ho trovato K9 Fullflex e sono rimasta colpita dal contenuto di funghi medicinali e dall’alto livello di estratto di cozza verde. Ho chiesto ad alcuni amici con cani delle loro esperienze con questo prodotto e tutti me ne hanno parlato bene. Così ho deciso di acquistare una confezione di prova, ma non mi aspettavo un miracolo. Invece avrei dovuto, perché è successo!
Dopo una settimana(!) di trattamento con FullFlex, ha ritrovato la voglia di giocare e correre con il nostro altro cane! È diventato molto più vigile, deciso e mobile. A volte si mette persino a correre e a farmi divertire con i suoi giochi!
Sono infinitamente grata che Fullflex mi abbia aiutata a riavere il vero Cesare, il mio Labrador eternamente allegro.
Questo prodotto vale davvero ogni euro, lo consiglio a tutti!
Katarína (verified owner) –
Vybrali sme si produkt K9 FullFlex pre nášho 9-ročného jazvečíka, pretože sme si všimli, že občas kríva na pravú prednú labku a jeho rameno je citlivé. Pravdepodobne si namohol alebo privrel sval na ramene, keďže inak je veľmi aktívny (a niekedy až príliš živý) psík. Keď začal otáčať labku smerom von, aby si uľavil od bolesti, hľadali sme niečo, čo by mu mohlo pomôcť.
Už po 3-4 dňoch sme videli zlepšenie, a teraz už vôbec nekríva. Náš energický psík je späť, a jeho labky sú zase v poriadku (samozrejme, ako to pri tomto plemene môže byť).
Produkt sa ukázal ako veľmi účinný, a určite mu ho budeme dávať pravidelne.
Ďakujeme!
Martina (verified owner) –
My elderly dog has been suffering from joint problems for many years. I have taken him to our vet regularly and he has had little or no relief from his pain with medication.
K9 FullFlex has worked wonders. He can bounce happily, can run again, doesn’t whine at any movement and uses all four legs equally.
Daan (verified owner) –
Wij hebben een grote, 13-jarige kruising. Twee jaar geleden werd hij in zijn linker poot gebeten door een teek. Dankzij snelle hulp van de dierenarts is hij gelukkig nog steeds bij ons. Sindsdien gebruikt hij zijn gebeten poot minder en heeft hij steeds meer moeite om op te staan. Medicijnen gaven hem vaak last van zijn maag.
Na een paar weken K9 Fullflex te hebben gebruikt, liep hij weer vrolijk rond, en hij had geen bijwerkingen.
We raden dit product zeker aan!