If your dog seems stiff after resting, hesitates before climbing the stairs, or isn't as eager to play as they once were, arthritis may be the cause. It's easy to chalk these changes up to getting older, especially because they happen so gradually. However, studies show that as many as 40% of dogs display signs of arthritis in X-rays before they reach four years old (if veterinarians check for it), but vets often diagnose the condition only when the dogs are ten or twelve.

Fortunately, more treatment options are available today than ever before. Depending on your dog's symptoms and overall health, your veterinarian may recommend medication for dog arthritis, injectable therapies, joint supplements, weight management, or a combination of treatments.

This guide explains the different types of arthritis medicine for dogs, how they work, when they're recommended, and how joint supplements can support long-term joint health as part of a comprehensive arthritis management plan.

Key takeaways:

• Dog arthritis medication comes in several forms: Arthritis treatment commonly combines prescription NSAIDs, injectable therapies, adjunctive pain medications, and joint supplements.

• Early treatment is important: While arthritis can't be cured, early treatment may help reduce pain, improve mobility, and slow joint degeneration. 

• Senior dogs need closer monitoring: Older dogs receiving long-term NSAIDs typically require routine bloodwork to monitor liver and kidney function. 

• Joint supplements have a different role than medication: They support cartilage health and long-term joint function and can be used alongside prescription arthritis medications.

• Human pain medications are not safe for dogs: Never give your dog medications such as ibuprofen, acetaminophen, or aspirin unless specifically directed by your veterinarian.

What Is Dog Arthritis, and Why Does It Need Medication?

Canine arthritis, or osteoarthritis, develops when the smooth cartilage cushioning your dog's joints starts to wear away. It most often affects the hips, knees, elbows, and shoulders, although any joint can be affected.

Healthy cartilage allows bones to move smoothly against one another. As that cushioning breaks down, the joint becomes inflamed, making movement more painful and causing stiffness, swelling, and reduced mobility. Dogs often shift their weight away from sore joints, which can weaken nearby muscles and place extra stress on other parts of the body.

Age is one of the biggest risk factors for arthritis, but it's far from the only one. Dogs can also develop arthritis because of:

1. Hip dysplasia or elbow dysplasia

2. Previous joint injuries, including ACL or CCL tears

3. Excess weight, which places added stress on the joints

4. Genetics, joint structure, and activity level

A systematic review of canine osteoarthritis risk factors found that genetics, joint structure, body weight, and activity level tend to interact, helping explain why arthritis develops and progresses differently from one dog to the next.

Arthritis gradually worsens over time, and damaged cartilage can't regenerate. Although the damage can't be reversed, treatment can reduce pain and inflammation, improve mobility, and help dogs stay active and comfortable for longer.

Signs Your Dog May Need Arthritis Medication

You might not see an obvious limp at first. Instead, you might notice that your dog moves more slowly, avoids certain activities, or seems less comfortable after resting.

Common signs of arthritis in dogs include: 

1. Difficulty getting up after resting or stiffness during the first few steps after lying down 

2. Reluctance to jump onto the couch, into the car, or up the stairs

3. A shorter, choppier stride instead of a smooth gait

4. Less interest in walks, fetch, or other activities they used to enjoy

5. Licking or chewing at a particular joint, which can be a sign of localized discomfort

Changes with your dog don't always appear overnight. Many dogs experience good days and bad days, and symptoms often become more noticeable after exercise, cold weather, or long periods of rest. 

Some dogs also become less willing to perform everyday activities that once seemed routine, like pausing before jumping into the car, taking longer to stand after a nap, or choosing to lie down sooner during walks. 

If your dog is showing more than one of these signs, it’s worth scheduling an appointment with your veterinarian. A physical examination and, in some cases, X-rays, help confirm whether arthritis is the cause and determine which treatment options are most appropriate. Thankfully, advancements in arthritis treatment for dogs mean that vets have more options than ever before to tailor treatment to every dog’s unique case. 

Starting treatment early may help slow joint degeneration before it has a greater impact on your dog's daily activities. 

Types of Dog Arthritis Medication and Their Uses

The table below summarizes the most common types of arthritis medications and supplements before we look at each one in more detail.

Medication Table

Supplement Products

Joint Supplements

Joint supplements play a different role than prescription arthritis medicine for dogs, so they’re often used alongside prescription treatments to support cartilage health and long-term joint function.  

Clinical research has shown that multi-ingredient joint supplements containing glucosamine, chondroitin, hyaluronic acid, and collagen can improve owner-assessed mobility while remaining well tolerated in dogs with osteoarthritis. 

TRI-ACTA H.A. We can also safely use (and our regular strength version too, though we usually recommend H.A. for dogs showing signs of arthritis) specifically alongside NSAIDs, since it contains only ingredients that naturally occur in your dog’s body. 

Early use of joint supplements is especially helpful for breeds that are more prone to orthopedic problems, such as Labrador Retrievers, German Shepherds, Golden Retrievers, and large-breed dogs. Starting joint support before arthritis becomes advanced won't prevent every case, but it may help support healthier joints throughout a dog's lifetime. 

Common ingredients found in canine joint supplements include:

• Glucosamine: Helps support cartilage structure and maintain healthy joints.

• Chondroitin: Works alongside glucosamine to help protect cartilage and support joint function.

• Methylsulfonylmethane (MSM): A natural anti-inflammatory that helps to reduce swelling, which in turn offers pain relief.

• Hyaluronic acid: Helps support joint lubrication and smooth movement.

Joint supplements take time to work. Visible improvement may not appear for four to eight weeks, which is why veterinarians recommend using them daily as part of a long-term routine. Although the individual and severity of arthritis affect the outcome, TRI-ACTA HA often produces results much quicker—sometimes within 10-14 days.

The best medicine for dogs with arthritis is highly situational. The perfect choice for your pup is going to depend on the severity of the condition, their symptoms, and past medical history. However, including a daily joint supplement in your dog’s treatment is always going to be a staple part of the plan.

TRI-ACTA H.A. for Pets

Our maximum strength formula is optimally designed to accelerate the formation of cartilage, minimize inflammation, expedite the healing process, and improve joint conditions.

Learn More

Prescription NSAIDs (Non-Steroidal Anti-Inflammatory Drugs)

Prescription NSAIDs (non-steroidal anti-inflammatory drugs) are the first-line treatment for dogs with osteoarthritis. These medications work by reducing inflammation within the affected joint. Reducing inflammation relieves pain, improves mobility, and makes everyday activities such as walking, climbing stairs, and getting up after resting more comfortable.  

Some dogs begin to show improvement within a few days, although response times vary.  Common prescription NSAIDs include:

1. Carprofen (sold as Novox or Rimadyl): One of the most commonly prescribed NSAIDs for dogs, used to reduce pain and inflammation associated with osteoarthritis and other orthopedic conditions.

2. Meloxicam (Metacam): A once-daily NSAID that helps relieve arthritis pain and inflammation and is also prescribed after surgery.

3. Firocoxib (Previcox): A COX-2 selective NSAID designed to target inflammation while minimizing effects on other protective pathways in the body.

4. Deracoxib (Deramaxx): Another COX-2 selective NSAID that's prescribed to manage osteoarthritis pain and inflammation or provide pain relief following orthopedic surgery.

5. Galliprant (grapiprant): Unlike traditional NSAIDs, galliprant blocks a specific receptor involved in osteoarthritis pain rather than broadly suppressing inflammation. Veterinarians sometimes choose Galliprant for dogs that don't tolerate traditional NSAIDs well or that require a different treatment approach.

Although these medications all belong to the NSAID class, they aren't identical. Your veterinarian will choose a medication based on factors such as your dog's age, overall health, existing medical conditions, and the severity of their arthritis. If one NSAID doesn't provide enough relief or causes unwanted side effects, another option may be a better fit.

Dogs receiving NSAIDs over the long term should have routine bloodwork to monitor liver and kidney function. Follow-up appointments also allow your veterinarian to adjust medications or dosages as your dog's needs change.

Important Safety Warning: Never give your dog human medications such as Tylenol (acetaminophen), ibuprofen, or aspirin unless your veterinarian specifically instructs you to do so. These medications can be highly toxic to dogs and may cause serious illness or death.

Monoclonal Antibody Therapy: Librela

Librela is another form of arthritis medicine for dogs that may be appropriate when traditional NSAIDs aren't the best option. Instead of reducing inflammation, it targets nerve growth factor (NGF), a protein involved in transmitting pain signals associated with arthritis. By interrupting those signals, Librela helps manage osteoarthritis discomfort with a once-monthly injection.

Veterinarians often recommend it for dogs that can't tolerate traditional anti-inflammatory medications or for those whose pain isn't adequately controlled with NSAIDs alone. 

Librela doesn't reverse joint damage or cure osteoarthritis. Instead, its goal is to make everyday movement more comfortable by reducing pain. Many dogs become more willing to walk, climb stairs, play, or get up after resting once their pain is better controlled, though every dog responds differently. 

Injectable Cartilage Protectants

Another type of arthritis medicine for dogs is Adequan. Rather than primarily relieving pain, it supports cartilage health, improves joint lubrication, and protects joint tissues. Veterinarians use it alongside other arthritis treatments rather than replacing them. 

Adequan is typically given as a series of injections over several weeks before transitioning to a maintenance schedule if continued treatment is recommended. Improvement may develop more gradually than it does with NSAIDs. 

For that reason, Adequan is commonly included in a multimodal arthritis management plan alongside prescription pain medication, joint supplements, weight management, and regular exercise.

For dogs that struggle with daily pills, scheduled injections can be a practical alternative. 

Adjunctive Pain Medications

Not every dog's arthritis pain responds well enough to an NSAID alone. When pain is severe, long-standing, or involves the nervous system, veterinarians may recommend adding another medication to improve comfort instead of simply increasing the NSAID dose.

Common options include:

• Gabapentin: Often prescribed to help manage nerve-related pain and improve overall comfort, particularly in dogs with chronic arthritis.

• Amantadine: May enhance pain relief when used alongside other arthritis medications, especially in dogs whose pain has become more difficult to control.

These medications aren't typically used as first-line treatments for osteoarthritis. Instead, vets add them when a dog's symptoms aren't adequately controlled with a single medication. Using different medications that target pain in different ways can provide better relief while reducing the need for higher doses of any one drug.

Collagen Support

Collagen can help dogs with arthritis by providing essential building blocks (collagen hydrolysates, abbreviated as CH) that support remaining joint cartilage, lower joint inflammation, and improve overall mobility. Blends for Life Collagen Support also includes Spirulina, which is a nutrient-rich algae that boosts immune function, supports skin and coat health, and helps with digestion.

Ahiflower Oil

Fish oil is one of the most popular supplements for cats. The omega 3 fatty acids in it offer real benefits for a cat's brain, coat, gut, heart, immune system, and skin. Oils with EPA and DHA also help lower inflammation in the body. But many cats have seafood allergies that make it impossible for them to take fish oil. In addition, some cat owners might want a more eco-friendly alternative. That's where Ahiflower oil comes in, offering similar benefits without using a marine source.

Blends for Life Ahiflower Oil gives cat owners a clean, eco-friendly alternative to marine-based oils, so they have more ways to add omega fatty acids to their cat's diet.

Green-Lipped Mussel

Green lipped mussels are a natural source of chondroitin sulphate, glucosamine, omega-3 fatty acids, and other minerals. Researchers have shown that these ingredients can assist with controlling inflammation in the joints, relieving pain.  

Blends for Life Green-Lipped Mussel+ includes turmeric, which contains curcumin, which may support a healthy immune system and ease arthritic and joint pain. Black pepper contains piperine, which can boost curcumin's bioavailability. This helps curcumin stay in the bloodstream longer so the body can actually use it. 

Best Medicine for Older Dogs with Arthritis

The best arthritis medicine for dogs isn't always the same for every senior. Choosing the right medication becomes more complex as dogs age. 

Arthritis affects senior dogs differently than younger adults. By the time symptoms become noticeable, cartilage loss is frequently more advanced, and joints have been compensating for years.

Recovery also tends to be slower in senior dogs. Age-related changes in muscle mass, joint flexibility, and healing can make it harder to bounce back after an arthritis flare-up. As a result, even mild increases in pain or stiffness may have a greater impact on daily function than they would in a younger dog. 

When choosing the best medicine for older dogs with arthritis, veterinarians consider several additional factors: 

• Older dogs generally need additional joint support as cartilage loss becomes more advanced.

• Kidney and liver function should be monitored more closely in seniors on long-term NSAIDs, since organ function naturally declines with age.

• Because joint supplements don't place the same demands on the liver and kidneys as NSAIDs, they're commonly used alongside prescription medications as part of a long-term management plan.

Maintaining a healthy body weight and continuing daily joint support become even more important as dogs age, since both can help reduce stress on already compromised joints.

Daily routines also become increasingly important for senior dogs with arthritis. Short, consistent walks can be more beneficial than occasional strenuous exercise, while orthopedic beds, non-slip rugs, and ramps make it easier for older dogs to move comfortably around the home. These simple adjustments won't replace medication, but they reduce unnecessary stress on painful joints and support overall mobility.

Because arthritis tends to progress over time, senior dogs should receive regular veterinary checkups to evaluate whether arthritis medicine for dogs is still providing adequate pain relief. Small adjustments made early help prevent discomfort from becoming more difficult to manage later.

Choosing the right medication becomes more complex as dogs age.

A senior dog with early kidney changes, for example, might need a lower NSAID dose, a different drug altogether, or greater reliance on joint supplements to reduce the amount of NSAID needed day to day. This doesn't mean senior dogs should avoid arthritis medication. Instead, treatment plans often require closer monitoring and periodic adjustments as your dog's needs change.

CBD oil is another treatment owners frequently ask about. While research is still evolving, talk with your veterinarian before adding CBD oil or any other alternative therapy to your dog's arthritis management plan.

Can You Combine TRI-ACTA With Dog Arthritis Medication?

TRI-ACTA is designed to complement, not replace, prescription arthritis medications. Because osteoarthritis affects several different structures within the joint, veterinarians often combine treatments that address different aspects of the disease. 

Prescription medications primarily relieve pain and inflammation, while TRI-ACTA supports cartilage health and long-term joint function. Since these therapies work in different ways, they're often used together, at least in the beginning. Many owners find that over time, they’re able to reduce or even eliminate NSAIDs altogether if their dog’s pain and mobility are handled effectively with the supplement only. This is a great benefit because long-term use of NSAIDs can have serious side effects.

Research supports the joint supplement/NSAID approach. In one study, dogs receiving glucosamine, chondroitin, and marine fatty acid compounds showed measurable improvement when compared with a traditional arthritis medication, reinforcing that joint supplements can play an important role in a dog's long-term arthritis management plan.

TRI-ACTA H.A. for Pets

Our maximum strength formula is optimally designed to accelerate the formation of cartilage, minimize inflammation, expedite the healing process, and improve joint conditions.

Learn More

Frequently Asked Questions About Arthritis Medicine for Dogs

How long does it take for arthritis medicine to work in dogs? 

NSAIDs can begin relieving pain within a few days to a week. Librela typically takes effect within one to two doses, so improvement may build over the first month or two. 

Joint supplements work more gradually, with many owners noticing a difference after four to eight weeks of consistent daily use, since they support cartilage rather than block pain outright.

What are the side effects of arthritis medication in dogs? 

NSAIDs can occasionally cause vomiting, diarrhea, reduced appetite, or, less commonly, effects on liver or kidney function, which is why routine bloodwork matters. Librela and Adequan are generally well tolerated, though any new medication should be started under veterinary supervision so your dog can be monitored for a reaction. 

Adjunctive medications like gabapentin can cause mild grogginess, especially in the first few days. Joint supplements are generally well tolerated, with side effects usually limited to mild digestive upset. 

Is it safe for a dog to be on arthritis medication for life? 

Dogs with arthritis can remain on medication for the rest of their lives, since the condition itself doesn't go away. The key to long-term safety is regular monitoring through veterinary checkups, bloodwork for dogs taking NSAIDs, and periodic reassessment of the treatment plan as your dog ages.  

Daily joint supplements also become part of the long-term routine, since they carry no organ-related risks and can help reduce the amount of prescription medication a dog needs over time.

Do dogs need a prescription for arthritis pain relief? 

NSAIDs, Librela, and Adequan all require a prescription and veterinary oversight. Joint supplements, on the other hand, are available over the counter, which is why so many owners start there and ask their vet about the best arthritis medicine for dogs over the counter. 

How do I know if my dog's arthritis medication needs to be adjusted? 

Watch for signs that your dog seems less comfortable than usual, such as more stiffness, reluctance to move, or a return of symptoms that have improved. These are worth bringing to your vet, since dosing may need to change as arthritis progresses or as your dog ages.

Helping Your Dog Live Comfortably With Arthritis

Finding the right arthritis medicine for dogs is one of the most important steps in helping your dog stay comfortable and active as the condition progresses. 

Combined with regular veterinary care and daily joint support, it can make a meaningful difference in your dog's quality of life. Alongside regular veterinary care, daily joint support can play an important role in helping maintain healthy joints and mobility over time. 

No single treatment is right for every dog, but working closely with your veterinarian allows you to build a plan that addresses your dog's pain, supports healthy joints, and adapts as their needs change over time.

Purchase TRI-ACTA or TRI-ACTA H.A. online, or learn where to buy at a store near you. 

TRI-ACTA H.A. for Pets

Our maximum strength formula is optimally designed to accelerate the formation of cartilage, minimize inflammation, expedite the healing process, and improve joint conditions.

Learn More