CBD for dogs and cats: Is it safe?
A leading veterinary cannabis researcher explains what experts do and don’t know about giving animals CBD.
Danielle Kosecki is an award-winning journalist who has covered health and fitness for 15 years. She’s written for Glamour, More, Prevention and Bicycling magazines, among others, and is the editor of The Bicycling Big Book of Training. A New York native, Danielle now lives in Oakland where she doesn’t miss winter at all.
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Analysts predict the CBD pet care market will reach $125 million by 2022, making it one of the fastest-growing segments of the CBD sector.
CBD advocates tout a myriad of benefits for humans — but can it help our four-legged friends too? The answer is complicated.
When Colorado legalized recreational marijuana in 2012, it wasn’t something veterinarian Stephanie McGrath thought much about day to day. But then the phone calls started coming. Pet owners and family veterinarians wanted to know what she thought about medical marijuana in relation to animals, and whether she was researching it.
This story discusses substances that are legal in some places but not in others and is for informational purposes only and not for the purpose of providing legal advice. You shouldn’t do things that are illegal — this story does not endorse or encourage illegal drug use.
At the time, McGrath had no interest in cannabis and didn’t even know what cannabidiol (CBD) was, so she mostly ignored the topic. But the combination of receiving phone calls and seeing CBD products already lining pet store shelves made her realize she needed to get up to speed.
“Around 2013 or 2014, I started looking into what research was already out there and I realized that there was essentially no real, good scientific literature in the human world, let alone the veterinary research world,” says McGrath, assistant professor of neurology at Colorado State University College of Veterinary Medicine and Biomedical Sciences. “And so I started investigating whether it would even be plausible for me to conduct any research.”
McGrath went on to become one of the pioneering researchers in the field of veterinary cannabis but even with her early efforts, research (and regulation) has struggled to keep pace with demand, as people increasingly turn to CBD products to treat their pet’s pain, anxiety and seizure disorders.
Thanks in large part to the 2018 Farm Bill, which legalized hemp-derived CBD, analysts now predict the CBD pet care market will reach $125 million by 2022, making it one of the fastest-growing segments of the CBD market.
For such a rapidly growing industry, there are still a lot of unknowns. Below, what you need to know if you’re considering CBD for your furry friend.
What is CBD?
Dried hemp flowers, like those shown here, naturally contain higher levels of CBD than other varieties of the Cannabis sativa plant.
Picture Alliance/Getty Images
Cannabidiol is part of the cannabinoid family, a class of chemical compounds naturally found in the cannabis plant. Cannabinoids interact with the human body’s endocannabinoid system, which helps the body maintain homeostasis.
Unlike its cousin delta-9-tetrahydrocannabinol, or THC, CBD doesn’t produce a “high,” but it is psychoactive. In 2018, the US Food and Drug Administration approved Epidiolex, an oral CBD solution, to treat Lennox-Gastaut syndrome and Dravet syndrome, two rare and severe pediatric seizure disorders. CBD is also being investigated as a possible treatment for pain , anxiety and schizophrenia symptoms in humans.
How is CBD administered to animals?
CBD pet care products come in many of the same forms you’re probably used to seeing for humans, including edibles (think: chewable treats and capsules), oils that can be added to food or placed under the tongue and topical creams or balms that are rubbed directly on the skin.
Like the CBD products meant for humans, each of these CBD pet care product types appears to have a different effect on the body — in dogs, anyway.
When McGrath started studying CBD in 2016, one of her first studies analyzed how three different delivery methods — a capsule, an oil and a cream — affected the way CBD moved through the bodies of healthy dogs.
Chewable treats are a popular form of pet care CBD.
Pharma Hemp Complex/Unsplash
“We measured the pharmacokinetics, which basically means you give the dogs a single dose of all three delivery methods and then you measure a bunch of different blood levels over a 12-hour period,” says McGrath. “So how quickly is the CBD absorbed, how high the blood concentration gets at that single dose, and then how fast the CBD is eliminated.”
McGrath found that, out of the three specific formulations they tested, the oil had the best pharmacokinetic profile, meaning it reached the highest concentration in the blood, stayed in the bloodstream the longest, and performed the most consistently across different types of dogs. The capsule also performed well but the cream less so. It performed too inconsistently for McGrath and her team to draw any conclusions.
These results line up with what we know so far about CBD absorption in humans, but the research is too preliminary to be used to make any medical decisions.
How does CBD work in animals?
It’s unclear — and a puzzle researchers are still trying to solve in humans as well. For instance, dogs have an endocannabinoid system but whether CBD interacts with it in the same way experts think it does in humans remains to be seen. For now, all McGrath knows is that in dogs, like in humans, CBD appears to be metabolized by the liver.
Are there any health benefits to giving your pet CBD?
Veterinary CBD research has focused primarily on dogs, leaving a lot of cat owners with unanswered questions.
Research is promising, but it’s still early. A randomized, double-blind, placebo-controlled study published in the journal Pain in 2020 found that “Cannabidiol possesses potent anti-inflammatory properties and significantly improved the mobility of large domestic canines afflicted with osteoarthritis.”
This research follows a 2018 study found that CBD can help increase comfort and activity in dogs with osteoarthritis.
In 2019, McGrath published a study showing CBD may help reduce the number of seizures experienced by epileptic dogs. But although these studies were well-designed and peer-reviewed, they’re still small and very preliminary.
“All we’ve basically done is give this drug to these dogs and said, OK, this is what we’re seeing,” says McGrath. “But whether or not the blood levels achieved are adequate enough to treat certain diseases, we don’t yet know.”
Still, McGrath is optimistic. Veterinarians don’t have a wide variety of drugs available to treat these conditions and some of the ones that do exist often come with debilitating side effects, such as weight gain and lethargy. “If CBD works, then I think it would hit the mark of being both effective and not carrying a lot of side effects,” says McGrath. “So that’s kind of what we’re hoping for.”
McGrath and other researchers nationwide are currently conducting larger studies on CBD’s effectiveness in treating osteoarthritis in dogs and cats, epilepsy in dogs and post-operative pain, but it will be a while before the results are published.
Until more is known, it’s best to talk to your veterinarian before giving your animal CBD.
Is CBD safe for animals?
CBD, in its pure state, appears to be safe and well-tolerated by animals, according to a 2017 World Health Organization report. However, both subsequent 2018 canine studies mentioned above noted an increase in the liver enzyme alkaline phosphatase (ALP) during CBD treatment.
As part of her study, McGrath ran a simultaneous liver function test to make sure the dogs’ livers weren’t failing and everything came back normal, so it’s unclear whether the elevated ALP levels were caused by something completely benign or could develop into a more serious problem long term.
“I would definitely be a little concerned about giving CBD to a dog that has known liver issues,” says McGrath. Similarly, because CBD appears to be metabolized by the liver, McGrath says she’d also be wary about giving CBD to a dog who already takes a medication that’s metabolized by the liver. “We don’t really know how these things interact right now,” she says.
The other big thing pet owners need to be aware of is quality control. Because the CBD market isn’t well regulated yet, CBD products can contain ingredients that aren’t listed on their labels — including THC, which is known to be toxic to cats and dogs.
When shopping for CBD pet care products, look for companies that support research and will provide a certificate of analysis, or COA, for every batch they sell.
One way to avoid potentially harmful ingredients is to only use products that come with a certificate of analysis, or COA (the batch number on the COA should match the number on the product’s label or packaging). A COA is issued when an independent lab tests the product to confirm its ingredients and potency, among other things.
Legally, CBD products must contain no more than 0.3% THC, which should be safe for animals. But there’s no reason to take chances. Whenever possible, stick to CBD pet care products that contain 0.0% THC and be on the lookout for symptoms of THC poisoning such as vomiting, diarrhea, lethargy, restlessness and trouble standing.
Bottom line: “We haven’t found anything that’s super alarming about CBD,” says McGrath. “But on the flip side, we still know very little about it, and it’s really important for owners to know that and use it with caution until we have more information.”
The information contained in this article is for educational and informational purposes only and is not intended as health or medical advice. Always consult a physician or other qualified health provider regarding any questions you may have about a medical condition or health objectives.
Is CBD Safe for Dogs?
These days, it can seem as though there’s a new health trend popping up every day. One of the latest hot topics is that of CBD – otherwise known as cannabidiol.
From oils to edibles to lotions, CBD comes in many forms. This product is used to impart a feeling of relaxation and calm without the “high” felt from THC, which is the psychoactive compound found in marijuana.
You may be wondering – if I can receive these benefits, can the same be said for my pet? In this article, we’ll cover what CBD is, the benefits for dogs, and how to safely give CBD to your dog if you choose.
What Is CBD?
Cannabidiol (CBD) is a naturally occurring compound found in the hemp (cannabis) plant.
Dating back to the 3rd century , cannabis was known for its healing properties and was used to treat a variety of illnesses and ailments like gout, malaria and cognition troubles.
Fast forward to modern day, the two most studied compounds of the cannabis plant are CBD (cannabidiol), and THC (tetrahydrocannabinol). These two compounds are similar, with one key difference. THC is responsible for the ‘high’ that many people associate with marijuana. CBD on the other hand, can provide many benefits for the person (or pup) using it – without the intoxicating feeling.
Why Give Your Dog CBD?
Many dog-parents out there swear by CBD. And there are plenty of reasons for it. The most common being that as dogs age, many will develop aches, pains and anxiety (as humans do). There are plenty of medications that can be prescribed for these conditions, but many people find that they lose their effectiveness over time.
This is where CBD oil starts to become a larger, stand-out player.
CBD oil can help reduce anxiety in dogs – especially separation anxiety or a noise phobia (think thunderstorms or fireworks). It can also help reduce pain and inflammation – giving a dog suffering from arthritis a better quality of life.
If you choose to give your dog CBD in an edible oil form, it can begin to work in as quickly as 5-20 minutes after it’s administered. For anxious pooches, research has suggested that its efficacy improves if given over a period of time rather than all at once.
Benefits of CBD
Like we do, our pets have an endocannabinoid system that allows CBD to have an effect. This system allows the CBD compound of the cannabis plant to work its magic for our furry friends, just like it would for us.
Because of our similar endocannabinoid systems, many researchers are led to believe that dogs can experience most (if not all) of the same benefits that CBD provides for humans.
Some of the benefits of CBD for dogs are said to be:
- Decreases stress and helps with anxiety : It has been reported that giving your pet CBD oil can reduce stress associated with social/separation anxiety .
- Help to improve appetite : CBD triggers receptors in the brain that stimulate your pup’s appetite; it can help to decrease symptoms of nausea and can relax the central nervous system, making eating easier on your pup’s digestive tract if they’re feeling unwell.
- Decrease pain : Especially when it comes to inflammation and pain caused by auto-immune diseases like arthritis.
- Can prevent epilepsy or seizure episodes : In a recent study , 89% of dogs had fewer seizures when given CBD oil.
- Can help soothe skin conditions : CBD helps to repair the skin barrier, so that bacteria and allergens have less of an effect on your pooch.
- Helps with noise phobias : CBD products can help keep your pup calm during a thunderstorm or a night of fireworks.
Though there isn’t enough research to support being safer than traditional medicine, one key selling point for many people is that CBD has little to no negative side effects for dogs. Many show improvement with their conditions in as little as a few weeks.
Is CBD Safe for Dogs?
Yes, CBD is safe for dogs. Research from the WHO shows there is no abuse or dependence potential for animals using CBD, and determined that CBD may be a useful treatment for a number of medical conditions from anxiety to nausea.
However, it’s important to note that there still isn’t a high amount of scientific evidence yet to support its exact benefits for your furry friend. The few recent studies that have been conducted returned encouraging results – but it’s not yet a definitive answer.
As for veterinarians, you might find that many that are split in their recommendations. The primary reason for this is that it’s simply too early to tell whether or not CBD is an effective supplement for your pup.
“We haven’t found anything that’s super alarming about CBD. But on the flip side, we still know very little about it and it’s really important for owners to know that and use it with caution until we have more information.”
– Stephanie McGrath, neurologist and assistant professor at Colorado State University’s College of Veterinary Medicine & Biomedical Sciences
One word of caution: because it appears to be metabolized in the liver – similarly to humans – some vets caution against giving CBD to dogs with known liver issues.
If you decide to give your dog CBD, it’s important to know how much you should give. Like any new health supplement, food or medication, introduce it slowly. If needed, you can carefully increase the dosage.
See below for a handy CBD serving size chart for your dog:
It’s certainly up to you to choose how frequently to dose your dog with CBD. There are some recommendations out there advocating for once per day, others push for every 8 hours. A large part of the dosage decision depends on the symptoms that your pup is dealing with and their severity.
A good rule to follow is that your dog should experience some relief from their symptoms. Start small, and work up to a larger dose if needed.
Best CBD Products for Your Pup
We recommend our own Full Spectrum CBD Tincture for Dogs. We’re invested in providing our dogs with holistic ways to support their best health, whether that’s through balanced raw dog food, quality CBD, or a combination of the two. Our CBD tincture is derived from organically grown hemp in Minnesota, without GMOs, and has been 3rd party tested.
But if you choose to look elsewhere, it’s important to look for a few key things from a CBD supplier:
- Third-party testing. Since CBD products are not currently regulated by the FDA, you should look for information revealing the products have been tested by a third party. This means that a lab has verified the claims made on the packaging. You should find this information on the company’s website. For instance, you may see a seal of approval from the U.S. Hemp Authority, which means that company’s products meet its stringent standards of have passed a third-party audit.
- What ingredients are in it? On the product packaging and/or website, you should find a full list of ingredients in the CBD product. Make sure to consider all the ingredients in the product, and check with your vet before giving to your dog.
- Is it organic? Consuming organic helps you avoid the use of most synthetic pesticides found in conventional agriculture. Look at the ingredient list to see if they’re using organic.
- Where is the cannabis grown? Look for products grown in the U.S. since they are subject to industrial hemp regulations.
Now that you know what to look for in a supplier, you can choose the medium you want to give your dog CBD.
CBD comes in many of the same forms for pets as they do for humans. For example, you can feed:
- Oils that can be taken orally or mixed in with food
- CBD edibles in the form of chewable treats or filled capsules
- Topical creams or ointments used on the skin
It’s a good idea to speak with your vet or trusted pet-care provider to see if they have recommendations for products that may work for your pup.
Finally, if you can, try and find a local provider or pet supply shop that carries CBD products that are within your budget. You should always do your research to determine the right product type or amount administered for your pet. It may take a few tries to find what works best – but your pup will certainly thank you for it.
CBD Oil for Dogs: What You Need to Know
As with any pet wellness trend, when it comes to CBD oil for dogs, there’s a lot of information floating around the internet, and it’s difficult to know what’s accurate and what’s exaggeration. Of course, you want to do what’s best for your pup, which leads to the question: What do I need to know about CBD oil for dogs?
The AKC’s Chief Veterinary Officer, Dr. Jerry Klein, explains what CBD oil is, what it does for dogs, and its safety concerns and potential side effects.
What Is CBD Oil?
CBD, or cannabidiol, is a compound found in cannabis and hemp. Dr. Klein says it is essential to note that in most cases, CBD oil does not contain delta-9-tetrahydrocannabinol (THC), the compound that gives marijuana its psychoactive properties. In fact, most CBD products are derived from hemp and not from marijuana.
How Does CBD Affect Dogs?
Currently, there has been no formal study on how CBD affects dogs. What scientists do know is that cannabinoids interact with the endocannabinoid receptors located in the central and peripheral nervous systems, which help maintain balance in the body and keep it in a normal healthy state.
What Dog Health Problems Can CBD Oil Treat?
While there’s no definitive scientific data on using CBD to treat dogs, there’s anecdotal evidence from dog owners suggesting it can treat pain, especially neuropathic pain, as well as helping to control seizures.
According to Dr. Klein, CBD is also used because of its anti-inflammatory properties, cardiac benefits, anti-nausea effects, appetite stimulation, anti-anxiety impact, and for possible anti-cancer benefits, although there’s no conclusive data on this use.
The AKC Canine Health Foundation (CHF) is sponsoring a study through the Colorado State University’s College of Veterinary Medicine and Biomedical Sciences to evaluate the use of CBD in treatment-resistant epileptic dogs. The CHF hopes that this will be the first study to gain scientific data on the use of CBD in dogs with this condition.
Possible Side Effects of CBD in Dogs
While there’s no scientific data on the side effects of CBD usage for dogs, there are potential side effects based on how CBD affects humans. To minimize any potential side effects, make sure you are following the proper dosage.
- Dry mouth: Research has shown that CBD can decrease the production of saliva. For dogs, this would manifest as an increased thirst.
- Lowered blood pressure: High doses of CBD have been known to cause a temporary drop in blood pressure. Even though the drop is small, it might create a brief feeling of light-headedness.
- Drowsiness: Dog owners have used CBD to treat anxiety. The calming effect of CBD can also cause slight drowsiness, especially when using higher doses.
Risks of Using CBD Oil for Dogs
The safety and risks of using CBD for dogs have not yet been researched. The U.S. Food and Drug Administration has not approved CBD and has not issued a dosing chart. Therefore, we do not know what size dosage would be toxic. Any medication or supplement carries the risk of a reaction. It is always advisable, when giving your dog something new, to start out with small amounts and then closely monitor the effects. And always check with your veterinarian first.
CBD Products on the Market
If you and your veterinarian decide that you should try CBD as a treatment for your dog, there are a few things to keep in mind when purchasing CBD oil. Not all oils are the same; you’ll want high-quality CBD oil to have a better chance of it working.
- Look for organic. If the CBD oil is not organic, it at least should not contain pesticides, fungicides, or solvents.
- Don’t only shop based on price. Higher quality and purity are usually associated with a higher cost. A cheaper option could contain toxic substances such as pesticides, herbicides, or heavy metals. Make sure your CBD oil is free of additives.
- Get the analysis. The manufacturer should provide a certificate that certifies the amount of CBD that is in the product. Many CBD products contain only small amounts of CBD. You’ll also want to make sure there is little or no THC in the product.
- Buy CBD as a liquid. You can buy dog treats containing CBD, but the best form to administer is an oil or tincture. This way, you can adjust your dog’s dose drop by drop.
The CBD Wellness Trend
Why are we hearing so much about CBD oil now? Dr. Klein points to the legalization of marijuana in many places, which has triggered interest in potential health benefits of marijuana-related products. “We are likely to see continued interest in CBD and an increase in research about its uses and efficacy in the coming years,” he says.
Learn more about the CBD study funded by the Canine Health Foundation.
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