Symptoms Of Too Much CBD In Dogs: Signs, Causes, And Next Steps

Written & posted by Ingrid Ferris

CBD is generally well tolerated by dogs when an appropriate, pet-friendly product is used as directed. But accidents happen. Maybe you accidentally gave your dog a second dose, they got into the bottle when you weren’t looking, or they ate a CBD product intended for human consumption. 

If your dog has had too much CBD, you may notice side effects like excessive sleepiness, gastrointestinal upset, wobbliness, or changes in behavior. And fortunately, severe outcomes from hemp-derived CBD alone appear to be uncommon. However, that doesn’t mean every accidental ingestion can safely be managed at home. 

The amount consumed, your dog’s size, THC content, other ingredients, and current medications can all affect the situation. Below, we’re discussing how to recognize the symptoms of too much CBD in dogs, what may have caused them, and when it’s time to call your veterinarian. When you know what to look for and what to do, you can approach the situation confidently and calmly. 

Quick Overview Of CBD Oil And Dog CBD Use

CBD oil contains cannabidiol, a cannabinoid found in the cannabis plant. Unlike THC, CBD isn’t intoxicating and doesn’t produce the typical “high” associated with marijuana.

Pet owners use CBD for several reasons, including supporting everyday comfort, calm, mobility, and overall wellness. CBD has also been researched in veterinary medicine for potential applications such as pain management and certain behavioral concerns, although evidence varies by use.

Not all CBD products are the same, though. Concentration, cannabinoid profile, carrier oil, added ingredients, and product quality can all vary considerably. This is particularly important to keep in mind when you’re determining how much CBD your dog actually consumed.

Can A Dog Overdose On CBD Or Experience A Dog CBD Overdose?

A dog can consume too much CBD and develop adverse effects, although “overdose” doesn’t necessarily mean a life-threatening poisoning.

CBD itself appears to have a relatively wide safety margin in dogs and is generally well tolerated in veterinary studies. That said, taking an excessive amount can still cause uncomfortable or concerning symptoms, particularly at high doses. 

It’s also important to distinguish CBD exposure from THC toxicity. Hemp-derived CBD products can contain legally permitted trace amounts of THC depending on their formulation. Those trace amounts aren’t intended to produce intoxicating effects when a product is used appropriately. However, a dog that consumes a large quantity of a full-spectrum product may also ingest more THC than intended.

Marijuana products and marijuana edibles are a different concern because they may contain substantially more THC. Dogs are particularly sensitive to THC, making suspected THC exposure a reason to contact your veterinarian promptly.

Signs Your Dog Has Had Too Much CBD (Dog Too Much CBD)

The symptoms of too much CBD in dogs can vary based on how much your dog consumed, their body weight, the specific product, and whether other cannabinoids or ingredients were involved. Signs may include:

• Excessive drowsiness or lethargy
• Wobbliness or difficulty walking
• Vomiting or diarrhea
• Decreased appetite
• Weakness
• Changes in behavior or responsiveness
• Changes in blood pressure

Symptoms generally develop after the product has had time to be absorbed, but timing and duration can vary considerably depending on the formulation, amount consumed, and the individual dog’s response.

Gastrointestinal Signs

An upset stomach is one possible reaction to excess CBD or the ingredients in a CBD product. Your dog may vomit, develop diarrhea, refuse food, or otherwise seem uncomfortable.

Carrier oils and additional ingredients may also contribute to gastrointestinal upset, particularly if your dog consumes a large volume at once. Repeated vomiting or diarrhea deserves veterinary attention because of the risk of dehydration, and because you may not know whether CBD is the only substance involved.

Neurological And Behavioral Signs

One of the more noticeable effects of too much CBD may be more pronounced drowsiness. Your dog might sleep significantly more than usual, seem lethargic, or respond more slowly to you. 

Wobbliness or difficulty coordinating movement can also occur. However, side effects like pronounced ataxia, disorientation, exaggerated responses to sound or movement, urinary incontinence, and extreme sedation can also be associated with THC toxicity. 

If you aren’t certain what your dog consumed, don’t try to determine the cause based on symptoms alone. 

Cardiovascular Effects and Low Blood Pressure

CBD may affect blood pressure, particularly at higher doses. More specifically, it’s important to take weakness, unusual lethargy, or collapsing seriously. But rather than trying to assess your dog’s pulse or blood pressure yourself, pay attention to their overall condition. Difficulty breathing, collapse, seizures, inability to stand, extreme sedation, or difficulty waking your dog warrants immediate veterinary care.

Why Can Too Much CBD Affect Dogs?

CBD interacts with the endocannabinoid system, a signaling network found throughout your dog’s body. This system includes cannabinoid receptors and participates in processes ranging from pain perception to mood to immune function. As CBD enters the body, it’s metabolized by the liver. CBD can also affect enzymes involved in processing other substances and medications.

At appropriate amounts, these interactions are part of what researchers study when investigating CBD’s potential benefits. But when a dog receives considerably more CBD than intended, its effects may become more pronounced and increase the likelihood of adverse reactions.

Fortunately, you don’t need to understand CBD pharmacokinetics to respond appropriately to an accidental ingestion. What’s much more important is figuring out what your dog consumed, approximately how much, and how they’re behaving now.

Why Do Dogs Accidentally Consume Too Much CBD?

One of the simplest causes is a dosing error. Multiple people in a household may accidentally give the same dose, a dropper may be misread, or a pet owner may confuse the CBD concentration with the amount of oil being administered. 

Dogs can also find products on their own. Oils, flavored soft chews, cannabinoid treats, and especially human edibles can be appealing enough for a curious dog to eat far more than intended.

Human products introduce additional risks because CBD may not be the only concern. Depending on the product, they can contain:

• Higher amounts of THC
• Chocolate
• Xylitol or other ingredients unsafe for dogs
• Caffeine
• Additional cannabinoids and active ingredients

If your dog ingests a human CBD product, keep the package so your vet can review the complete ingredient list. Additionally, poor-quality or inaccurately labeled CBD products present another problem. Without reliable third-party testing, it can be difficult to know exactly how much CBD or THC the product actually contains. 

Are Some CBD Products Safer for Dogs Than Others?

When you’re intentionally giving CBD to your dog, a pet-specific product removes some of the uncertainty that comes with products formulated for human consumption. Pet CBD oils also make it easier to control the amount administered than if a dog accidentally consumed an entire edible.

The cannabinoid profile matters, too. Broad-spectrum CBD products are formulated without detectable THC, while full-spectrum hemp products can contain legally permitted trace amounts. 

Regardless of the type, look for clear CBD concentration information and accessible third-party testing. A Certificate of Analysis (COA) can help confirm cannabinoid levels, including THC, and provide testing information for contaminants.

At Myriam’s Hemp, our Pet CBD Oil was formulated specifically with our furry friends in mind, so you don’t have to adapt one of your own CBD products into your dog’s routine. Like our other CBD products, our Pet Oil is independently tested, made with premium hemp and all-natural ingredients, and is formulated for maximum absorption and efficacy. Our goal is to provide the transparency and quality every member of your family deserves, pets included.

CBD and Other Medications

CBD can affect liver enzymes involved in metabolizing certain medications. This means CBD may change how the body processes some drugs when they’re used together.

If your dog takes prescription medication, has an existing health condition, or receives CBD regularly, discuss CBD use with your veterinarian. They can determine whether medication interactions or additional monitoring are needed.

Some vets may also recommend monitoring liver values during long-term CBD use, particularly when higher amounts are being used, or a dog takes other medications processed by the liver. 

What To Do If Your Dog Consumes Too Much CBD

First, remove the remaining product so your dog can’t consume any more. Also, keep the bottle, package, or label nearby rather than throwing it away. After that, determine as much as you reasonably can, including:

• What product your dog consumed
• Whether it was made for pets or humans
• CBD concentration
• THC content, if any
• Approximately how much is missing
• When the ingestion occurred
• Your dog’s weight
• Any medications your dog currently takes
• Symptoms you’re observing

Don’t induce vomiting or give your dog home remedies unless a veterinarian specifically instructs you to do so. And if your dog is awake, responsive, and your vet advises home monitoring, provide access to fresh water and a quiet, comfortable place while watching them closely.

When to Call Your Veterinarian for a CBD Overdose

When in doubt, always call. It’s reasonable to contact your vet if your dog consumed substantially more CBD than intended, you don’t know how much CBD they consumed, symptoms are developing or worsening, the product contained significant levels of THC, or your dog consumed a human CBD product.

Your veterinarian can assess the exposure based on your dog’s size, the product, amount consumed, current symptoms, and other health factors. You can also contact a veterinary poison-control service, such as the ASPCA (Animal Poison Control Center) or Pet Poison Helpline, for guidance about a potential poisoning.

Emergency Signs Requiring Immediate Care

Seek emergency veterinary care if your dog: 

• Collapses or cannot stand
• Has a seizure
• Has significant difficulty breathing
• Is extremely sedated or difficult to wake
• Develops severe or rapidly worsening symptoms

Suspected ingestion of a substantial amount of THC or another toxic ingredient also warrants prompt professional guidance.

How Is Too Much CBD in Dogs Treated?

There isn’t a universal treatment for a “CBD overdose.” Treatment ultimately depends on the amount consumed, symptoms, and whether THC or another potentially harmful ingredient was involved. 

Mild cases may only require observation and monitoring under veterinary guidance. More significant cases may require supportive care, such as IV fluids, temperature support, nausea management, or other treatment based on the dog’s symptoms. 

Remember: don’t induce vomiting or administer activated charcoal yourself. Whether either intervention is appropriate depends on the circumstances and should be determined by a veterinary professional.

Preventing Accidental CBD Overdoses in Dogs

Prevention starts with choosing a pet-safe product with clear concentration and dosing information. Use the dropper or measuring device provided with the product rather than estimating an amount. If your vet recommends adjusting your dog’s CBD dosage, make changes gradually and monitor your dog’s response.

Just as importantly, store CBD products somewhere your dog can’t reach them in a dry place. Don’t assume a closed bottle or bag will stop a determined pup, especially if the product is flavored.

Finally, human CBD and cannabis products should be stored separately and securely. This is especially important for marijuana edibles, which may combine THC with things like chocolate, xylitol, or other ingredients that create additional risks for dogs.

CBD Dosing: How Much Should You Give Your Dog?

There isn’t one universal CBD dosage that’s appropriate for every dog. Your dog’s weight matters, but so do the CBD concentration, reason for use, medications, health history, and individual response. This is why a pet-specific oil can be particularly useful.

Oils let you measure an amount more precisely and make small adjustments, rather than relying on a fixed-dose treat. Always start with the instructions for your specific product and your veterinarian’s guidance. A conservative approach also gives you an opportunity to see how your dog responds before increasing the amount.

FAQs About Too Much CBD in Dogs

How long do the effects of too much CBD last?

There’s no single timeline. Duration depends on the amount consumed, product formulation, your dog’s size and metabolism, and whether THC or other ingredients were involved. Contact your veterinarian if symptoms were prolonged, significant, or worsening.

Is CBD poisoning the same as THC toxicity?

No, CBD and THC are different cannabinoids with different effects. Dogs are particularly sensitive to THC, and marijuana intoxication can produce pronounced neurological and behavioral symptoms. If you suspect THC exposure, contact a veterinary professional.

What if my dog ate my CBD product?

Check the complete ingredient list immediately. Human CBD products can contain THC or ingredients that are unsafe for dogs. Also, keep the packaging and contact your vet or pet poison-control services with the product and amount your dog may have consumed.

Keep CBD safe, simple, and pet-specific with Myriam’s Hemp.

Most responsible CBD use starts long before the bottle reaches your dog’s mouth. Choosing a pet-specific product, checking its third-party testing, measuring each serving carefully, and storing CBD securely can significantly reduce the risk of accidental overconsumption. 

If your dog does get too much CBD, watch for symptoms and note the specific product involved rather than assuming they’ll simply sleep it off. When symptoms are significant, THC may be involved, or you aren’t sure what your dog consumed, your veterinarian is your best resource.

For pet parents who choose to incorporate CBD into their dog’s routine, Myriam’s Hemp Pet CBD Oil provides a pet-specific alternative that can fit seamlessly into your furry friend’s routine. With transparent labeling and independent testing, you can verify exactly what you’re giving your dog and measure each serving consistently.