Can Dogs Overdose on CBD?

Can Dogs Overdose on CBD?

Posted by Lianne McLeod D.V.M. on

Can Dogs Overdose on CBD?

With the increasing popularity of human CBD products, many pet owners are turning to CBD (cannabidiol) as a potential remedy for various health issues in their dogs. CBD, a non-psychoactive compound derived from the cannabis plant, has gained attention for its potential health benefits, including relief from chronic pain, anxiety, and inflammation.

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However, along with the growing interest in using CBD oil for dogs comes concerns about its safety, particularly in terms of dosage and potential risks of overdose. Understanding how CBD interacts with cannabinoid receptors in dogs and adhering to appropriate dosage guidelines are crucial for responsible administration.

This article aims to explore the question: Can CBD kill a dog? By examining the available evidence, understanding proper dosage guidelines, and recognizing potential risks, pet owners can make informed decisions about using CBD oil for their furry friends.

Understanding CBD Oil and Its Effects on Dogs

CBD is one of over a hundred compounds found in the cannabis plant, known as cannabinoids. Unlike THC (tetrahydrocannabinol), the compound in cannabis responsible for the "high" sensation, CBD does not produce intoxicating effects. Instead, it interacts with the endocannabinoid system in humans and animals, including dogs, helping to regulate various physiological processes such as pain sensation, mood, appetite, and immune response.

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By understanding the recommended dosage guidelines and administration, choosing high-quality products, and monitoring for adverse effects, dog owners can safely incorporate CBD oils into their pet's routine as advised in veterinary medicine.

Proper Administration of Dog CBD

Different administration methods suit various situations and individual preferences. Below are common methods for administering CBD to dogs:


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Usage: CBD oil is one of the most common and versatile forms of CBD for dogs. It typically comes in a small bottle with a dropper.

Administration: Use the dropper to measure the correct dosage based on your veterinarian's recommendation or the product's guidelines. Place the drops under your dog's tongue or mix them with their food.

Advantages: Precise dosage control, quick absorption when placed under the tongue, easy to mix with food.

CBD Dog Treats

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Usage: CBD dog treats are a convenient and tasty way to administer CBD to dogs.

Administration: Follow the recommended dosage on the product packaging or your veterinarian's advice. Give the hemp treats to your dog directly or incorporate them into their regular feeding routine.

Advantages: Easy to administer, convenient for dogs who enjoy CBD treats, often formulated with specific flavors to appeal to pets.

Capsules or Pills

cbd capsules

Usage: CBD capsules or pills provide a measured dose of CBD in a convenient form.

Administration: Administer the capsule or pill orally, either by placing it directly in the dog's mouth or hiding it in a treat or a small amount of food.

Advantages: Precise dosing, easy to incorporate into a dog's routine, may be suitable for dogs who resist the taste of oil.

Topical CBD Products

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Usage: Topical CBD products, such as balms or creams, are designed to be applied directly to the skin.

Administration: Apply the topical product to the affected area of your dog's skin, such as joints or sore muscles. Ensure the product is specifically formulated for topical use on animals.

Advantages: Targeted relief for localized issues, may be beneficial for skin conditions or joint pain.

Signs of CBD Overdoses

Can a dog overdose on CBD oil? The simple answer to this question is, "Yes." Clinical signs of CBD overdose in dogs can manifest in various ways, indicating that the dog has consumed too much CBD oil or other CBD products. Some common signs include:

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Excessive sedation or lethargy beyond the expected calming effect of CBD may indicate an overdose.


Lack of coordination or stumbling, resembling symptoms of intoxication, can occur in dogs who have consumed too much CBD.

Vomiting and Diarrhea

Gastrointestinal upset, including vomiting and diarrhea, may occur as a result of an overdose on CBD oil. Note that some oils may contain a carrier oil that causes digestive upset at first. Gastrointestinal upset is not a surefire sign of CBD overdose.

Changes in Appetite

Loss of appetite or changes in eating behavior may be observed in dogs who have ingested excessive amounts of CBD.

Increased Aggression or Anxiety

Paradoxical effects such as increased aggression or heightened anxiety may occur in some dogs as a result of an overdose on CBD oil.

Respiratory Depression

In severe cases of CBD overdose, dogs may experience slowed breathing or hypoventilation.


Some dogs may exhibit heightened sensitivity to stimuli or increased sensitivity to touch.

Changes in Heart Rate

Abnormal heart rate or irregular heartbeat may occur in dogs who have consumed too much CBD.


Low blood pressure may occur as a result of an overdose on CBD oil, leading to symptoms such as weakness or fainting.

Tremors or Seizures

In rare cases, excessive CBD consumption may lead to tremors or seizures in susceptible dogs.

Proper Dosage and Monitoring for CBD Use in Dogs

To minimize the risks of CBD overdose and ensure the safety of their dogs, dog parents should follow the right CBD dosage and monitor their pets closely for any adverse reactions. But how much CBD oil is enough? Below are some essential considerations for using CBD in dogs:

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Consult a Veterinarian

Before starting CBD treatment for a dog, pet owners should consult with a health practitioner familiar with CBD use in animals. Your veterinarian can provide guidance on the recommended dosage, potential interactions with other medications, and monitoring for any adverse reaction.

Choose High-Quality CBD Oil Products

Select pet-specific CBD products, preferably from reputable manufacturers that adhere to strict quality standards. Look for products made from hemp-derived CBD and third-party lab tested for potency and purity.

Start Low and Slow

When introducing CBD oil to a dog's routine, start with a low dosage and gradually increase it as needed while monitoring your dog's response. Pay attention to the dog's weight, age, and individual health conditions when determining the appropriate dosage.

Monitor for Adverse Effects

Monitor your pet closely for any signs of adverse reactions, such as lethargy, vomiting, dry mouth, diarrhea, or changes in behavior. If your dog reacts in any negative way, discontinue CBD use and seek immediate veterinary attention from the Animal Poison Control Center or by calling the pet poison helpline.

Avoid THC-Containing Products

THC (tetrahydrocannabinol) is toxic to dogs and can cause symptoms of THC poisoning, including neurological impairment, lethargy, vomiting, and in severe cases, coma or death. Ensure that any CBD product intended for dogs contains negligible levels of THC (<0.3%) to minimize the risk of toxicity.

Monitor Long-Term Effects

If your dog requires long-term CBD treatment for a chronic health condition, monitor your dog's response and overall health regularly. Long-term use of CBD oil may impact liver function in some dogs, leading to elevated liver enzymes. If your dog shows signs of liver enzyme abnormalities or other adverse effects, consult your veterinarian for further evaluation and management.

Risks of CBD Overdose in Dogs

One of the primary concerns surrounding CBD use in dogs is the risk of overdose, which can lead to negative effects and potentially fatal consequences. Although CBD is generally considered safe, below is a list of what could happen if you give your dog too much CBD:

risks associated with improper use of cbd for dogs

Respiratory Depression

In high doses, CBD may cause hypoventilation in dogs, leading to difficulty breathing or slowed respiratory rate. This condition can be particularly dangerous for dogs, as it may impair oxygenation and lead to respiratory distress or failure.

Low Blood Pressure

CBD can cause a drop in blood pressure, known as hypotension. Excessive consumption of CBD oil may result in a significant decrease in your dog's pressure, leading to symptoms such as lightheadedness, dizziness, weakness, or fainting. This condition can be especially concerning in dogs with underlying cardiovascular conditions or those taking medications that lead to hypotension.

Gastrointestinal Upset

Some dogs may experience digestive issues such as nausea, vomiting, or diarrhea when exposed to high doses of CBD. Gastrointestinal upset can be distressing for dogs and may lead to dehydration, electrolyte imbalances, and nutrient deficiencies if not adequately managed.

Urinary Incontinence

CBD overdose may affect bladder control in dogs, leading to urinary incontinence or difficulty urinating. Changes in urinary habits or incontinence could indicate underlying health issues and should be promptly addressed by a veterinarian.

Extreme Drowsiness

Excessive consumption of CBD oil can cause lethargy, sedation, or extreme drowsiness in dogs. While some level of relaxation may be desirable for dogs with anxiety or hyperactivity, excessive drowsiness can impair normal activities and alertness, affecting the dog's quality of life.

Liver Enzyme Abnormalities

Prolonged or high-dose CBD use may impact liver function in dogs, leading to elevated liver enzymes and potential liver damage. CBD is metabolized in the liver, and long-term exposure to too much CBD oil may strain the liver's detoxification capacity, resulting in hepatotoxicity or liver dysfunction.

Adverse Drug Interactions

CBD may interact with certain medications metabolized by the liver's cytochrome P450 enzymes, potentially altering their metabolism and efficacy. Dogs taking medications that are metabolized by the same enzymes as CBD, such as certain seizure medications or pain relievers, may be at risk of adverse drug interactions when exposed to high doses of CBD.

THC Toxicity

While CBD itself is not psychoactive and does not produce intoxicating effects, some CBD products may contain trace amounts of THC (tetrahydrocannabinol), the psychoactive compound in cannabis. Ingestion of THC-containing products can lead to THC toxicity in dogs, causing symptoms such as neurological impairment, lethargy, ataxia, vomiting, and in severe cases, coma or death.

Lack of Regulation and Quality Control

The CBD market is largely unregulated, and there is variability in the quality and purity of CBD products available for pets. Some products may contain inaccurate labeling, inconsistent CBD concentrations, or contaminants such as pesticides, heavy metals, or residual solvents. Pet owners should exercise caution when selecting CBD products for their dogs and choose reputable manufacturers that adhere to strict quality standards and provide third-party lab testing.

Potential Long-Term Effects

While short-term CBD overdose may result in acute symptoms, the long-term effects of your dog overdosing on CBD are not well understood. Prolonged exposure to high doses of CBD may have cumulative effects on dogs' health and well-being, including potential impacts on liver function, cognitive function, immune response, and overall physiological balance.

Responsible Pet Ownership and CBD Use

As with any pet health supplement or medication, being a responsible pet owner is crucial when using CBD products for dogs. This includes:

pet owners and cbd dogs

Educating Oneself

Pet owners should educate themselves about the potential benefits and risks of too much dog CBD oil and make informed decisions based on reliable information from veterinarians and reputable sources.

Monitoring the Pet

Regularly monitor your dog's response to CBD treatment, including any changes in behavior, appetite, or overall health. Adjust the dosage or discontinue use if necessary in consultation with a veterinarian.

Veterinary Oversight

Involve a veterinarian in the decision-making process regarding CBD oil use for your dog's health condition. Your vet can provide guidance on proper doses, potential interactions with other medications, and monitoring for negative effects.

Proper Storage

Store CBD products securely out of reach of pets to prevent accidental ingestion of too much CBD, and follow the manufacturer's instructions for storage and usage.

Reporting Adverse Events

If a dog experiences any adverse reactions to CBD products, report them to the veterinarian immediately and relevant regulatory authorities such as the Animal Poison Control Center for further investigation and monitoring.

The Bottom Line

McLeod's bottom line cbd for dogs

While CBD holds promise as a natural remedy for various canine health issues, pet owners must approach its use with caution. So, can dogs ingest too much CBD oil? Although CBD itself is not toxic to dogs, improper dosage, consumption of THC-containing products, or exposure to low-quality CBD oil products can pose risks to canine health.

The World Health Organization (WHO) has determined that CBD has minimal impact on a wide array of physiological and biochemical parameters and does not induce significant negative effects on animal behavior unless administered in extremely high doses.

As pet owners increasingly turn to CBD gummies, oils, and treats to address issues such as chronic pain or anxiety in their dogs, the need for a comprehensive understanding of safe dosage levels becomes paramount.


  1. American Society for the Prevention of Cruelty to Animals (ASPCA). (n.d.). FAQs about CBD use in pets. Retrieved from

  2. Ashton, L. (2023, June 22). Can a dog overdose on CBD oil? [Blog post]. Center for Animal Health. Retrieved from

  3. American Kennel Club (AKC) Staff. (2024, February 05). CBD oil for dogs: What you need to know. Retrieved from

  4. Twinley, M. (2023, August 7). Can dogs overdose on CBD? [Blog post]. World Animal Foundation. Retrieved from

  5. Son, K. (2024, January 17). Can a dog overdose on CBD oil? [Blog post]. Retrieved from

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Lianne McLeod, DVM, is a former writer for The Spruce Pets, contributing articles for 11 years. Before Dr. McLeod began writing about pet care, she worked several years in small animal practice. She has written extensively about the care and keeping of exotic pets and pet health care. She now researches water quality and chronic disease at the University of Saskatchewan. Lianne McLeod earned her Doctorate of Veterinary Medicine from the Western College of Veterinary Medicine at the University of Saskatchewan. She also received a Bachelor of Science degree in biology from Simon Fraser University. She continued her education and received a Ph.D. in Epidemiology from the University of Saskatchewan. Now, she splits her time between her family, research and writing about pet health for all the animal lovers out there.

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