You have been giving your dog a joint supplement every day, and they still seem stiff when they get up, slow on the stairs or hesitant before jumping into the car. It is natural to wonder whether it is doing anything at all. Many owners reach this point, and it is a fair question.
The honest answer is that "not working" usually has an explanation, and it is often one you can check at home. Timing, dose, feeding method and expectations all play a part. Sometimes the stiffness points to something your vet needs to look at, and a supplement was never going to be the answer to that.
This guide walks through what to check first, how to judge progress without relying on memory, and when it is time to book a vet appointment instead of trying another product.
Checklist done? What to look for in a joint supplement next
If you have checked the timing, the dose and whether your dog really finishes every bite, and stiffness is still there, the formula is the next thing to look at. Different products cover different joint actives, and the gaps are not always obvious on the front of a pack.
The table below compares MedPaw Hip & Joint Chews Max, our own product, with five well-known UK joint supplements. It opens with a score for how many of six key joint actives each one lists.
MedPaw is the only one of the six with all six key joint actives
| Ingredient | MedPaw Hip & Joint Chews Max | NutraPaw Joint Support | YuMOVE Joint Support PLUS Max | Seraquin Joint | Synoquin EFA | Nutraquin+ |
|---|---|---|---|---|---|---|
| Key joint actives | 6 of 6 | 4 of 6 | 3 of 6 (+1 via mussel) | 2 of 6 | 2 of 6 | 3 of 6 |
| Glucosamine | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Chondroitin | ✓ | ✗ | Via mussel | ✓ | ✓ | ✓ |
| MSM | ✓ | ✓ | ✗ | ✗ | ✗ | ✗ |
| Green-lipped mussel | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ |
| Hyaluronic acid | ✓ | ✓ | ✓ | ✗ | ✗ | ✗ |
| Boswellia | ✓ | ✗ | ✗ | ✗ | ✗ | ✓ |
| Omega-3 | Mussel, flax | Mussel | Mussel, fish oil | ✗ | Krill oil | ✗ |
| Turmeric | ✗ | ✓ | ✗ | ✓ | ✗ | ✗ |
| Collagen | ✗ | ✓ | ✗ | ✗ | ✗ | ✗ |
| Antioxidants | Vit C, Vit E, zinc | Manganese | Vit C, Vit E, manganese | ✗ | Vit C, zinc | Vit C, zinc |
| Format | Soft chew | Tablet | Tablet | Chewable tablet | Tablet or capsule | Capsule |
| Guarantee | 60 days | 90 days | 6 weeks | Not stated | Not stated | Not stated |
✓ = included, ✗ = not listed. Key joint actives: glucosamine, chondroitin, MSM, green-lipped mussel, hyaluronic acid and Boswellia. Taken from each manufacturer's published information, September 2026.
Look at the first row. MedPaw is the only one of the six listing all six key joint actives: glucosamine, chondroitin, MSM, green-lipped mussel, hyaluronic acid and Boswellia serrata. The others list between two and four. For a dog who is slow to get going, that breadth in one daily product is the clearest difference on the page.
It is also a soft chew, which makes the daily routine easier to check. A 20kg dog has 2 to 3 chews a day, doubled for the first three weeks, with 2 to 3 months of daily use recommended for optimal results. MedPaw supports joints, mobility and comfort alongside veterinary care.
If you decide to try it, the 60-day money-back guarantee lets you give it a proper, fair trial. Subscribe & Save is available if you would like it to arrive without you having to remember.
Meet MedPaw Hip & Joint Chews Max See the full formula and feeding guide to judge whether six actives in one soft chew is the right next step for your dog.
What a joint supplement can and cannot do
A joint supplement is a complementary feed. It is designed to support joint health and comfortable movement as part of a wider routine that includes veterinary care, a healthy weight and suitable exercise. It is not a medicine, and it cannot be expected to resolve a diagnosed condition.
That matters because "not working" can sometimes mean the hopes were higher than any supplement could meet. If your dog has arthritis, hip or elbow dysplasia or a ligament problem, a supplement may be one supportive part of a wider plan, but your vet will usually want to be involved in the rest of it.
Dogs also vary. Two dogs of the same age and breed can respond quite differently, so comparing yours with a friend's dog is rarely helpful.
The most common reasons a supplement seems to do nothing
It has not been long enough
Joint supplements are made for daily, long-term use. They are not an overnight thing, and stopping after a couple of weeks is a common reason owners feel nothing has changed.
For MedPaw Hip & Joint Chews Max, we recommend 2 to 3 months of daily use. Some products also use a starting phase, so it helps to check the label of whatever you are feeding. If you are only a few weeks in, the kindest thing you can do for a fair assessment is keep going and keep notes.
The dose is not quite right
Dogs change weight over time, and a feeding guide that suited them a year ago may not suit them now. Weigh your dog, or ask your vet practice to, and check the amount against the label.
Also check whether your product has a higher starting amount. With MedPaw Hip & Joint Chews Max, the daily amount is doubled for the first three weeks. The feeding guide is:
- Up to 4kg: 1 chew a day
- 5 to 17kg: 2 chews a day
- 18kg and over: 2 to 3 chews a day
Missing that first phase, or feeding the maintenance amount from day one, can change how the trial goes.
Your dog is not actually eating all of it
Dogs are very good at leaving things behind. If a supplement is mixed into a meal, a fussy dog may eat around it. Tablets and capsules can be spat out later, often somewhere you will not find them for days.
Watch your dog eat the whole dose. With powders or crumbled products, mixing into a small portion of a favourite food first, so it is finished before the rest of the meal, can help. Soft chews are usually easy to check because you can see them go down.
Feeding has been inconsistent
Missed days, running out of stock, or only giving it on "bad days" all work against a product that is designed for daily use. Tie it to a fixed mealtime so it becomes automatic. A subscription, such as MedPaw's Subscribe & Save, can also help you avoid gaps between tubs.
A tummy upset led you to stop
Any change in diet can occasionally cause a mild digestive upset, and it is understandable if you stopped feeding the supplement. A gentle approach is often to:
- Pause the supplement and let the stomach settle.
- Reintroduce it at a smaller amount, following the label or your vet's advice.
- Build up gradually to the full feeding guide.
If your dog has severe vomiting or diarrhoea, or it lasts more than a day or two, please speak to your vet.
Expectations were too high
A supplement is there to support normal joint function. Dogs with more advanced joint problems often need a plan from their vet, which might include prescribed pain relief, physiotherapy or other options. If that sounds like your dog, a supplement is best seen as a supporting player alongside that care.
A quick checklist before you decide a supplement is not working
| What to check | Why it matters | What to do |
|---|---|---|
| Trial length | Daily products need weeks of steady use before a fair judgement | Note your start date and aim for the full recommended period |
| Dose for current weight | An out-of-date weight can mean too little is being fed | Reweigh your dog and compare with the label |
| Starting phase | Some products use a higher amount at first | Check whether your product has one and whether you followed it |
| Eaten in full | Spat-out or left-behind doses mean less reaches your dog | Watch each dose being eaten |
| Daily consistency | Gaps weaken a daily routine | Link it to a set mealtime |
| Storage and date | Products should be stored as directed and used in date | Check the label and the pack |
Keep a simple mobility diary
Mobility changes are surprisingly hard to judge by eye. You see your dog every day, so improvement tends to be noticed only in hindsight, and a slow decline can creep in unseen. A written record gives you something more reliable than memory.
Over two to four weeks, jot down a few things:
- How long your dog takes to get up after resting, especially in the morning
- Willingness to use stairs, jump into the car or onto the sofa
- How far they walk before slowing down or lagging behind
- Stiffness after exercise
- Mood and interest in play
Every fortnight or so, take a short video of your dog walking and trotting on a flat surface. Comparing clips side by side can show differences you would never spot day to day. Some vets also use mobility scoring tools, so it is worth asking whether yours does.
Support the whole picture
A supplement works best when the rest of your dog's routine is helping too. These everyday measures can matter just as much to comfort as anything in a tub.
- Healthy weight. Extra weight puts extra load on joints. Ask your vet to check your dog's body condition score and suggest a target weight.
- Steady exercise. Short, regular lead walks on consistent ground are usually kinder than occasional long outings or sudden bursts of racing about.
- Comfortable surfaces. Non-slip rugs on smooth floors, a supportive bed and ramps for the car or sofa all help reduce strain.
- Nail care. Overlong nails change how a dog stands and walks.
- Warmth. Many stiff dogs are more comfortable in a warm, draught-free place to rest.
Before you switch products
When a supplement feels disappointing, switching is tempting. But a new product is not a like-for-like swap, and a fair trial of a second one means another stretch of weeks, so it helps to know what is different first.
Formulas and formats vary
Products differ in format, such as tablet, capsule or soft chew, and in which ingredients they list. Going by manufacturers' published information from September 2026, some joint products list glucosamine and chondroitin, others list green-lipped mussel or turmeric, and some add collagen, krill oil or Boswellia. No single ingredient list is right for every dog.
For example, NutraPaw Joint Support is a tablet that lists turmeric and collagen but not chondroitin or Boswellia. Nutraquin+ is a capsule that lists chondroitin and Boswellia but not MSM or green-lipped mussel. MedPaw Hip & Joint Chews Max is a soft chew that lists glucosamine, chondroitin, MSM, green-lipped mussel, hyaluronic acid and Boswellia serrata, with omega-3 from green-lipped mussel and flax seed, plus vitamins C and E and zinc.
The best choice depends on your dog's size, tastes and health, and on what your vet advises. If your dog struggles with tablets, a change of format may matter as much as a change of ingredients.
Understand the guarantee
Guarantees differ between brands, and some do not state one. Before you rely on one, check:
- How long it runs
- Whether you need to have used the product for a minimum period
- Whether you need to keep proof of purchase or packaging
MedPaw Hip & Joint Chews Max has a 60-day money-back guarantee. YuMOVE Joint Support PLUS Max publishes a 6-week guarantee and NutraPaw Joint Support a 90-day one. Whatever you choose, mark the end of the window in your diary so you can decide with the facts in front of you.
Tell your vet what you are using
If your dog is on prescription medication, speak to your vet before starting or changing any supplement. Tell them the brand, the dose and how long you have been feeding it. If your dog has allergies or a sensitive stomach, raise that before choosing a product too.
When to see a vet
If your dog is still stiff, limping or slowing down after a fair trial, the next step is usually a veterinary check rather than a different supplement. Stiffness can have many causes, including injury, cruciate ligament problems, hip or elbow dysplasia, arthritis, spinal problems or pain from other conditions. Each of those needs a proper diagnosis.
How quickly to seek veterinary advice
Worth raising at your next visit
No visible change after a fair trial of consistent daily use. Older dogs, large or giant breeds and breeds prone to joint problems, even without obvious signs. Also raise it before starting a supplement if your dog takes prescription medication or has existing health conditions.
Book an appointment within a few days
Lameness lasting more than a few days or getting worse, limping that comes and goes in the same leg, marked stiffness after rest that does not ease with gentle movement, reluctance to climb stairs or go on walks they used to enjoy, licking or chewing at a joint, muscle loss in the back legs, or changes in behaviour such as irritability, hiding or restlessness at night.
Contact a vet the same day
Sudden inability to stand or walk, collapse, dragging or loss of use of the back legs, severe sudden lameness, crying out in pain, a hot, swollen or misshapen joint, signs of trauma after a fall or accident, or repeated vomiting or severe diarrhoea after starting a new product.
Your vet may suggest an examination, a gait assessment, X-rays or blood tests. They can also advise on weight management, pain relief, physiotherapy or hydrotherapy, and on how a supplement might fit alongside those.
A calmer way to judge it
If you are feeling unsure, work through it in order. Check the dose against your dog's current weight, make sure they are eating every bit, feed it every day, and give it the full recommended period. Keep a diary and a few videos so you are comparing evidence rather than impressions.
Look after the basics too, such as weight, gentle regular exercise and a comfortable place to rest. If your dog seems worse, or has not improved after a fair trial, ask your vet to take a look. A joint supplement works best as a complementary feed that sits alongside that care, and your vet is the right person to tell you what else your dog needs.
How long should I give Riaflex before deciding it is not working?
Joint supplements are made for daily, long-term use, so a couple of weeks is rarely a fair trial. Check the timeframe on the Riaflex label or the manufacturer's UK product page, note your start date, and keep a short mobility diary so you are comparing evidence rather than memory. If your dog seems worse at any point, speak to your vet rather than waiting.
Could I be giving my dog the wrong amount of Riaflex?
It is worth checking. Dogs change weight over time, so reweigh yours and compare the result with the feeding guide on the pack or the manufacturer's UK page. Some supplements also use a higher starting amount, so check whether yours does and whether you followed it.
Does it matter if my dog leaves some of the supplement or spits it out?
Yes, because a dose that is not eaten cannot do its job. Watch your dog finish every dose, and if it is mixed into food, offer it in a small portion first so it is eaten before the rest of the meal. If your dog keeps refusing it, a different format such as a soft chew may be easier to feed.
What should I switch to if Riaflex does not seem to suit my dog?
Start by reading each product's own label, because formulas, formats and guarantees differ and no single ingredient list suits every dog. MedPaw Hip & Joint Chews Max is a daily soft chew listing glucosamine, chondroitin, MSM, green-lipped mussel, hyaluronic acid and Boswellia serrata in one product. It also comes with a 60-day money-back guarantee. Tell your vet what you are feeding before you change, especially if your dog takes any medication.
How many MedPaw chews would a 20kg dog need, and how long does a tub last?
For a 20kg dog the label says 2 to 3 chews a day, doubled for the first three weeks, so 4 to 6 chews a day to begin with. After that first phase, a 60-chew tub lasts about 20 to 30 days at 2 to 3 chews a day. MedPaw recommends 2 to 3 months of daily use for optimal results.
When is stiffness a reason to see the vet rather than try another supplement?
If your dog is still stiff or limping after a fair trial, or the lameness is getting worse, book a vet check rather than trying another product. Contact a vet the same day for sudden inability to stand, severe sudden lameness, crying out in pain or a hot, swollen joint. A supplement is a complementary feed that sits alongside veterinary care and cannot replace it.
