Grapiprant (Galliprant) for Dogs: Uses, Dosage & Side Effects

This article is educational and does not replace care from your vet. Grapiprant is a prescription medication, and the right dose, schedule, and monitoring plan depend on your dog's age, weight, medical history, and other medications.

See your vet immediately if your dog has repeated vomiting, black or bloody stool, severe diarrhea, collapse, marked weakness, trouble breathing, or gets into the bottle and may have taken extra tablets. NSAID-type medications can cause serious problems in some dogs, even when they are used correctly.

Do not start, stop, split, or combine pain medications without your vet's guidance. That includes over-the-counter human pain relievers, steroids, supplements, and other prescription anti-inflammatory drugs.

Grapiprant, sold under the brand name Galliprant, is a prescription anti-inflammatory medication used in dogs with osteoarthritis. It belongs to the piprant class and works differently from many older NSAIDs. Instead of blocking COX enzymes, it targets the EP4 receptor, one of the main receptors involved in osteoarthritis pain and inflammation.

That more targeted action is why some dogs who are not ideal candidates for other NSAIDs may still be considered for grapiprant. It is still an NSAID, though, so it is not risk-free. Your vet may recommend baseline lab work and follow-up monitoring, especially if your dog will use it long term or has other health concerns.

Galliprant is labeled for dogs older than 9 months and weighing more than 8 pounds. It is not approved for cats or for routine use in breeding, pregnant, or nursing dogs.

Grapiprant is used to control pain and inflammation associated with canine osteoarthritis. It does not cure arthritis or rebuild damaged cartilage, but it can help many dogs move more comfortably, rise more easily, and stay active enough to maintain muscle and joint function.

Your vet may consider it when a dog has stiffness after rest, reluctance to jump, slower walks, trouble with stairs, or soreness after activity. In many cases, medication works best when paired with a broader arthritis plan that may include weight management, home traction, exercise changes, rehabilitation, joint-supportive diets, or other pain-control options.

Because osteoarthritis is a long-term condition, treatment often needs adjustment over time. Some dogs do well on grapiprant alone, while others need a multimodal plan based on their age, mobility goals, and overall health.

The labeled dose of grapiprant is 2 mg/kg by mouth once daily, which is about 0.9 mg/lb once daily. Galliprant tablets are commonly available in 20 mg, 60 mg, and 100 mg strengths. Your vet will match the tablet size and tablet count to your dog's body weight and response.

It can be given with or without food. If your dog gets mild stomach upset on an empty stomach, your vet may suggest giving it with a meal or small snack. Follow the prescription label closely, because your vet may adjust the plan to use the lowest effective dose for the shortest duration that still keeps your dog comfortable.

If you miss a dose, give it when you remember unless it is close to the next scheduled dose. Do not double up unless your vet specifically tells you to. Contact your vet if your dog vomits after a dose, refuses tablets repeatedly, or seems less comfortable even while taking the medication.

The most commonly reported side effects are digestive. These can include vomiting, diarrhea, soft stool, decreased appetite, and stool that looks watery or contains blood. Some dogs also seem tired, less interested in food, or generally off after starting the medication.

More serious concerns can include dehydration, worsening stomach irritation, and changes in blood proteins or organ values on lab work. While grapiprant is designed to reduce impact on normal GI, kidney, and liver homeostasis compared with traditional COX-inhibiting NSAIDs, monitoring still matters, especially with long-term use.

Call your vet promptly if you notice repeated vomiting, black stool, bloody diarrhea, marked lethargy, yellowing of the gums or eyes, increased drinking, or a sudden drop in appetite. Stop the medication and seek urgent veterinary guidance if signs are severe.

Grapiprant should not be combined with other NSAIDs or corticosteroids unless your vet has created a specific transition plan. Using anti-inflammatory drugs together can raise the risk of stomach ulceration, bleeding, kidney stress, and other complications.

Caution is also important with other highly protein-bound medications, because concurrent use has not been fully studied. That can include some seizure medications, heart medications, and behavior medications. Supplements matter too, especially if your dog receives fish oil, CBD products, aspirin, or over-the-counter pain relievers.

Tell your vet about every medication, supplement, and chew your dog gets, even if it seems minor. That full list helps your vet choose the safest pain-control option and decide whether lab monitoring is needed.