CBD is a possible add-on treatment for some dogs with chronic pain, especially osteoarthritis, but the evidence is limited and inconsistent. CBD is not FDA-approved for pain in dogs and should only be considered with veterinary guidance. Research published in 2018 and 2020 found possible benefits in dogs with osteoarthritis, but the studies tested specific products and did not establish a reliable dose for every dog.
CBD should not replace a veterinary diagnosis, approved pain treatment, weight management or physical rehabilitation.
At a Glance
| Question | Evidence-based answer |
|---|---|
| Can CBD reduce pain in dogs? | It may reduce pain in some dogs, particularly dogs with osteoarthritis. |
| Is CBD proven to work? | No. The overall evidence is still low or very low certainty. |
| Is CBD FDA-approved for dogs? | No. The FDA has not approved cannabis or CBD for any use in animals. |
| Is there a standard dose? | No universal veterinary dose applies to every product or dog. |
| Should owners try it without a veterinarian? | No. CBD can cause side effects and interact with medicines. |
What Does the Research Show?
Studies of CBD in dogs with osteoarthritis have found possible improvements, but the results are mixed.
A 2018 randomized, placebo-controlled study found that a CBD-rich oil was associated with lower pain scores and increased activity. The study tested one formulation, so its results do not show that every CBD oil or treat will have the same effect.
A 2020 randomized, double-blind study also reported better pain and movement scores with certain CBD formulations. The improvement appeared in the higher-dose naked CBD and liposomal CBD groups. The lower-dose naked CBD group did not show the same benefit. The study was small and product-specific, so it should not be used as a dosing guide.
A systematic review and meta-analysis of five studies involving 117 dogs found that CBD may reduce pain scores. However, every included study had a high risk of bias, and the researchers rated the certainty of evidence as very low. Better trials could change the conclusion. CBD also did not consistently improve objective measures of gait or locomotion.
The practical takeaway is limited: CBD might help some dogs feel more comfortable, but veterinarians cannot yet predict which dogs will benefit, which product will work or what dose is suitable.
Which Types of Pain Might CBD Help?
Most canine CBD research has focused on chronic osteoarthritis pain. The symptoms studied include stiffness, reduced activity and difficulty walking.
There is much less reliable evidence for:
- Acute injuries
- Post-surgical pain
- Dental pain
- Cancer pain
- Nerve pain
- Abdominal pain
- Severe or unexplained pain
A dog with signs of pain needs a diagnosis first. CBD might make a dog seem calmer without treating the injury or disease causing the pain.
Is CBD Safer Than Prescription Pain Medicine?
Not necessarily. CBD may have a role alongside veterinary treatment for some dogs, but it has not been shown to be a safer or more effective general replacement for veterinary pain medicine.
Reported side effects include:
- Sleepiness or sedation
- Increased appetite
- Drooling
- Vomiting or diarrhea
- Unsteadiness when walking
CBD can also affect liver enzymes and interact with medicines such as nonsteroidal anti-inflammatory drugs, gabapentin, tramadol, phenobarbital, steroids and other drugs processed by the liver. Dogs with liver disease need particular caution.
Do not give a dog ibuprofen, naproxen, acetaminophen or another human pain reliever unless a veterinarian specifically prescribes it. Human pain medicines can cause serious stomach, kidney or liver problems in dogs.
Why Do CBD Products for Dogs Require Caution?
The FDA has not approved CBD for animal use. It also cannot verify the safety, effectiveness, quality or appropriate dosage of products sold for pets.
Product quality can vary. Cornell veterinary researchers have reported inaccurate cannabinoid labeling and contamination in some pet products. A product labeled "hemp" or "CBD" is not automatically consistent, pure or free from THC.
If a veterinarian agrees that CBD is reasonable for your dog, ask about:
- The exact product and formulation.
- Independent laboratory testing for CBD, THC and contaminants.
- Possible interactions with your dog's current medicines.
- Whether baseline or follow-up liver tests are appropriate.
- How you will measure improvement, such as walking, using stairs, appetite, sleep and willingness to play.
Do not give a dog a human CBD edible, vape product or cannabis product. These products may contain THC or other ingredients that are unsafe for pets.
What Should You Do If Your Dog Is in Pain?
Arrange a veterinary examination before starting CBD, especially if the pain is new, severe or getting worse. Treatment may include an approved veterinary pain medicine, controlled exercise, weight reduction, physical rehabilitation or care aimed at the underlying condition.
If your dog accidentally consumes cannabis or a THC-containing product and develops lethargy, heavy drooling, vomiting, agitation, tremors or seizures, contact a veterinarian or emergency animal hospital immediately.
Bottom Line
CBD may help some dogs with chronic osteoarthritis pain, but it is not a proven first-line treatment. Use it only when your veterinarian believes the potential benefit outweighs the risks, identifies a suitable product and can monitor your dog's response.