Dogster is reader-supported. When you buy via links on our site, we may earn a commission at no cost to you. Learn more.

Dog Health & Care

Can a Dog Overdose on CBD Oil? Vet-Reviewed Signs & Precautions

Jessica Kim
By Jessica Kim · Reviewed & fact-checked by Dr. Maja PlatisaVet Approved
Dr. Maja Platisa
Reviewed & Fact-Checked byDr. Maja PlatisaDVM MRCVS (Veterinarian)
Maja joined our team in March 2023 as one of our in-house veterinarians. She is passionate about animals and their health and loves to help the readers with any issues or questions they have regarding their four-legged friends and other animal companions. Her passion is small animal medicine and emergency work, while she also has a great interest in animal welfare.View authorThe information is current and up-to-date in accordance with the latest veterinarian research. Learn more
Updated on July 16, 2026
Share
dog taking CBD oil

CBD oil is used by some dog owners for several potential health benefits, although research on its effectiveness, safety, and potential benefits is still ongoing. While there’s yet to be any definitive research on the exact effects of CBD oil on dogs, many people use it for its potential anti-inflammatory and calming properties, which can help with issues like joint pain and anxiety.

Fortunately, serious CBD toxicity appears to be uncommon in dogs, but consuming too much CBD can still cause adverse effects and may require veterinary care. However, it doesn’t mean that you should give your dog more than the recommended daily dosage. Dogs can still get sick from consuming too much CBD oil.

Dogster_Website dividers_v1_Jan 18 2024-03

What Is CBD Oil?

CBD oil is composed of a compound called cannabidiol. Cannabidiol can be found in cannabis or hemp. CBD oil contains very little, a trace amount, or no THC, which is the compound responsible for psychoactive effects. In fact, most products containing CBD oil use CBD derived from hemp.

Signs Your Dog Has Had Too Much CBD Oil

While CBD is not considered psychoactive like THC, dogs can still experience adverse effects if they consume too much CBD oil. However, it can still cause an upset stomach if a dog takes too much of it. So, your dog may experience vomiting or diarrhea.

Your dog may also become drowsy and lethargic if it has too much CBD oil. In some cases, dogs that consume too much CBD may appear disoriented or temporarily uncoordinated. Taking too much CBD oil may also cause increased thirst in some dogs.

If a dog consumes a CBD product that contains THC, it may show signs of cannabis toxicity. Common signs may include lethargy, excessive sleepiness, disorientation, stumbling or loss of coordination, dilated pupils, drooling, urinary incontinence, vomiting, and increased sensitivity to sounds or movement. In more severe cases, dogs may experience tremors, low body temperature, slowed heart rate, or seizures. If you suspect your dog has consumed a product containing THC, contact your veterinarian immediately for guidance and treatment recommendations.

Image By: Lindsay Helms, Shutterstock
Dogster_Website dividers_v1_Jan 18 2024-03

What to Do If Your Dog Gets Sick from CBD Oil

In many mild cases, signs will improve as the CBD oil passes through your dog’s system, but it’s important to monitor your dog closely. Make sure to leave out plenty of water for your dog to drink.

If your dog has an upset stomach, contact your veterinarian for feeding recommendations, as the best approach depends on your dog’s age, health, and signs. Some may be managed at home by giving bland, easily digestible food, like boiled chicken with white rice or pumpkin, while others may need to see the vet. As your dog recovers, you can incorporate its regular food back into its diet incrementally.

It’s also helpful to contact your veterinarian for further care advice. Your veterinarian can provide information on making your dog as comfortable as possible and providing symptomatic treatment if required until the signs subside. If your dog’s upset stomach doesn’t get better within 24 hours, make sure to call your veterinarian for further instructions.

If you choose to give your dog CBD oil, it is best to use a pet-specific product and consult your veterinarian first. Most CBD products made for dogs are hemp-derived and contain little to no THC, though regulations vary by location. This can help reduce the risk of THC exposure and other adverse effects, but it does not eliminate all risks associated with CBD use.

If your dog eats CBD oil for humans or any other cannabis products, make sure to contact your veterinarian right away for treatment. If you can, make sure to gather information on how much product your dog has eaten and at what time. This information will be helpful for your veterinarian.

Image By: didesign021, Shutterstock
Dogster_Website dividers_v1_Jan 18 2024-03

Conclusion

In general, CBD oil formulated for dogs is considered relatively safe, and many dogs that consume too much experience only mild to moderate signs. So, if your dog ingests more than the recommended amount of CBD oil, provide a comfortable space, ensure access to fresh water, monitor it closely, and contact your veterinarian for guidance. 

Contact your veterinarian immediately if your dog develops severe signs or if you suspect the product contained THC or other potentially harmful ingredients.

Related Read:


Featured Image Credit: Vane Nunes, Shutterstock

The Dogster Newsletter

Expert dog care, straight to your inbox

News, insights, expert advice, and everything dog.

No spam — unsubscribe anytime.

By signing up, you agree to our Terms & Conditions and Privacy & Cookies Policy.

Click a star to rate. You can leave written feedback afterwards. (We read all feedback.)

Jessica Kim
Authored by

Jessica Kim

How Much CBD Oil Should I Give My Dog? Vet-Reviewed Dosing Guide

How Much CBD Oil Should I Give My Dog? Vet-Reviewed Dosing Guide

The health effects of CBD oil have prompted the rise in various CBD products including oils, drinks, foods, and various infused foods. And since the legalizati…

Nicole Cosgrove
By Nicole Cosgrove · 5 days ago
CBD Oil for Dogs: Uses, Side Effects & FAQ (Vet Answer)

CBD Oil for Dogs: Uses, Side Effects & FAQ (Vet Answer)

While there is a great deal of information and hype in the human medical world on the topic of cannabidiol (CBD), veterinary medicine is in its infancy in unde…

Dr. Rachel Ellison
By Dr. Rachel Ellison · 4 weeks ago
How Long Does CBD Oil Stay in a Dog’s System? Vet-Reviewed Benefits, Risks & More

How Long Does CBD Oil Stay in a Dog’s System? Vet-Reviewed Benefits, Risks & More

CBD oil has become a popular natural remedy for many common ailments, and it is now being used to treat some conditions in dogs. CBD oil is known to be safe an…

Nicole Cosgrove
By Nicole Cosgrove · 4 weeks ago
Can CBD Help My Dog With Anxiety? Vet-Verified Facts, Dosage & FAQ

Can CBD Help My Dog With Anxiety? Vet-Verified Facts, Dosage & FAQ

Anxiety is a feeling of unease, such as worry or fear, that can be mild or severe. According to the NHS, everyone has feelings of anxiety at some point in thei…

Nicole Cosgrove
By Nicole Cosgrove · 4 weeks ago

6 Potential Side Effects of CBD Oil for Dogs: Read This First!

CBD has become one of the biggest wellness fads in recent memory. Cannabis compounds were illegal until only recently, and CBD was the first to receive the pra…

Nicole Cosgrove
By Nicole Cosgrove · June 17, 2026
6 Potential Side Effects of CBD Oil for Dogs: Read This First!

Can Dogs Get High? Vet-Approved Marijuana Toxicity Facts & FAQ

We live in a world where marijuana is becoming increasingly mainstream. With its growing acceptance, many people are curious about its effects not only on them…

Nicole Cosgrove
By Nicole Cosgrove · June 17, 2026
Can Dogs Get High? Vet-Approved Marijuana Toxicity Facts & FAQ

Hemp Oil for Dogs: Vet-Reviewed Benefits & Uses

Hemp and CBD (cannabidiol) oil for dogs are widely available, but their effects have not been studied enough to prove their effectiveness. Claims of anxiety re…

Beth Crane
By Beth Crane · June 17, 2026
Hemp Oil for Dogs: Vet-Reviewed Benefits & Uses

My Dog Ate Marijuana, What Should I Do? Vet-Verified Facts & Recommendations

If your dog ate marijuana, take your dog to your veterinarian, or the nearest emergency vet, immediately. Ensure you are aware of what type of marijuana your d…

Rachael Gerkensmeyer
By Rachael Gerkensmeyer · June 29, 2026
My Dog Ate Marijuana, What Should I Do? Vet-Verified Facts & Recommendations

CBD for Dog Seizures and Epilepsy: What Science Says

Watching your beloved dog have a seizure is a scary and highly distressing ordeal for you and your dog. Luckily there are treatments available that can reduce…

Nicole Cosgrove
By Nicole Cosgrove · June 29, 2026
CBD for Dog Seizures and Epilepsy: What Science Says

How Long Does It Take CBD To Work In a Dog? Facts & Dosage Info

CBD has become extremely popular over the last couple of years, and people use it to relieve all sorts of health problems. However, CBD is not only beneficial…

Visnja Radosavljevic
By Visnja Radosavljevic · June 17, 2026
How Long Does It Take CBD To Work In a Dog? Facts & Dosage Info

How to Give CBD Oil to Dogs: 5 Vet-Reviewed Tips & Tricks

CBD oil may help dogs in numerous ways. Current studies on its efficacy are somewhat promising yet inconclusive, though many pet owners decide to give it a sho…

Kristin Hitchcock
By Kristin Hitchcock · June 16, 2026
How to Give CBD Oil to Dogs: 5 Vet-Reviewed Tips & Tricks

What Are CBD Treats for Dogs? Usage, Pros & Cons (Vet-Verified)

Cannabidiol (CBD) is used for several human health conditions, like anxiety, chronic pain, and even epilepsy. Dogs can be affected by these same health issues,…

Chantelle Fowler
By Chantelle Fowler · June 17, 2026
What Are CBD Treats for Dogs? Usage, Pros & Cons (Vet-Verified)

Love Dogs? So Do We! Join the Dogster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.

You may opt-out at any time. View our Privacy Policy for more information.

The Dogster app on a phone