how much cbd oil to give my dog for cancer

Can CBD Oil Help Dogs With Cancer?

Receiving a cancer diagnosis from your veterinarian is every dog owners’ nightmare. If you find yourself in this terrible situation, it is natural to search for ways you can help them to fight this battle and enjoy life as much as possible.

Unfortunately, there is no known natural cure for cancer in dogs. Aggressive treatment options such as radiotherapy and chemotherapy are currently the only ways to fight this illness with a chance of success.

But don’t give up hope just yet. There has been much research in recent years into the benefits of CBD for dogs with cancer, and the results have been very promising. Giving your pooch CBD during their cancer treatment can help to reduce their discomfort and may even enhance their chances of survival.

In this article, we take a closer look at CBD and how it can help your dog to enjoy a higher quality of life when facing cancer.

What is CBD?

‘CBD’ is an acronym for ‘cannabidiol’ – a type of cannabinoid found in plants of the cannabis Sativa and cannabis Indica species. Marijuana is the dried flower of female cannabis plant, either species, and hemp is only a member of cannabis Sativa family.

While many people automatically associate CBD with marijuana, the majority of CBD products are derived from the hemp plant. CBD doesn’t have a psychoactive effect – in other words, it cannot make you ‘high’.

The psychoactive effects of recreational cannabis use are the result of a separate compound known as ‘tetrahydrocannabinol’ or ‘THC’. Both marijuana and hemp plants contain a combination of CBD and THC, but hemp has a much higher percentage of CBD and a much lower percentage of psychoactive THC than marijuana.

A Farm Bill legalized the sale and production of hemp and hemp extracts in 2018, but all CBD products must contain less than 0.3% THC. CBD products are readily available across most of the United States without the need for a prescription.

How Does CBD Work?

Scientists are not sure exactly how CBD works, but it is believed to interact with a complex cell-signaling system present in all mammals – known as the ‘endocannabinoid system’ or ‘ECS’. This system is made up of a combination of enzymes, cannabinoid receptors, and endogenous cannabinoids (endocannabinoids).

The ECS is believed to play a vital role in the regulation of many metabolic processes and crucial functions, such as immune response, sleep, motor control, appetite and digestion, nerve function, liver function, mood, learning, and memory – among many others.

Researchers believe that CBD works with the body to prevent vital endocannabinoids from being broken down, thus helping the ECS to work as effectively as possible.

In recent years, the health benefits of CBD have become more well-known. Many people take this compound for various ailments on a daily basis. It is most often taken as an oil, but it is also available in the form of creams, gels or capsules.

Benefits of CBD for Dogs With Cancer

CBD has shown clinically proven benefits when used to fight both the symptoms of cancer and the troublesome side-effects of traditional cancer treatment.

As more people recognize the benefits of CBD for human health, the use of CBD for our pets is becoming more popular.

Here are the main benefits of giving CBD to a dog with cancer:

1. Reduces Pain

If your pup is fighting cancer, managing pain and inflammation will be a top priority to keep them comfortable. Pain may be caused by cancer itself, or as a side effect of the treatment they are receiving.

Unfortunately, many pain-relieving drugs come with troublesome side effects of their own. Opioid based drugs can lead to dependency issues, while the long-term use of non-steroidal anti-inflammatories, or ‘NSAIDs’, can result in damage to the liver and kidneys.

While you shouldn’t shun the use of traditional pain medications entirely, research has shown that CBD is an effective treatment for chronic pain and inflammation – without unwanted side-effects.

Additionally, studies have shown that, even with regular use, the human body doesn’t build up a tolerance to CBD. This means that, unlike some other medications, you may not have to increase your dog’s dose over time to achieve the same results.

2. Helps Fight Tumor Growth

The use of CBD for pain is well-documented, but can CBD oil shrink tumors in dogs?

It may sound surprising, but research has indeed shown that CBD has anti-tumor effects by triggering cell-suicide in diseased cells – especially when used in combination with radiotherapy and chemotherapy. One study, in particular, noted a threefold increase in the survival rates of rats who were treated with CBD alongside chemotherapy when compared to chemotherapy alone.

Not only does CBD show potential to enhance the effectiveness of cancer treatment for your dog, but it could also make it possible to reduce traditional treatment doses while achieving the same results.

Chemotherapy and radiotherapy are known to have troublesome side effects, which in many cases can be severe. By combining the use of CBD with these treatments, you may be able to reduce the side effects suffered by your pooch.

3. Aids Sleep

Adequate rest is essential to help your dog fight against cancer, as well as enjoy a happy life during their treatment. While CBD can improve sleep by reducing pain, some studies suggest that it can help your pooch get a good night’s kip in other ways, too.

Cancer and cancer treatments often lead to lethargy and a disturbed sleep cycle.

CBD acts as a ‘wake agent’, which stimulates your dog into a more wakeful state.

This may sound counterproductive at first, but increasing the amount of time your pooch is alert during the day may help them to sleep better during the night.

Due to its stimulating properties, working out the best time to give your dog CBD to promote sleep will likely require some trial and error before you find the perfect treatment schedule that works for them and their daily habits.

4. Improves Appetite

Perhaps one of the most commonly suffered side effects of cancer treatment in dogs is nausea and a lack of appetite – which often leads to extreme weight loss and further weakness.

CBD has been shown to reduce the intensity of nausea, as well as improve the appetite, thus helping your dog to maintain weight (and feel better, too!)

Are There Any Risks?

So long as it is sourced and used responsibly, CBD poses minimal risk to your dog.

THC is dangerous for dogs, so it is essential to check the quantities of THC in any CBD product before purchasing. Many products marketed to humans contain trace amounts of THC, even if they are not strong enough to create a psychoactive effect.

It is best to stick to CBD products manufactured from hemp, as these will have naturally low levels of THC than those made from marijuana.

How Much CBD Oil Should I Give My Dog for Cancer

While CBD is an all-natural product which can be easily purchased without a prescription, we advise you to discuss its use with your vet before proceeding.

If your dog is receiving other treatments and medications for cancer, there is a risk that CBD may interact with these.

This doesn’t mean that you cannot give CBD to your dog, but your vet may advise some changes to their treatment plan to accommodate its use.

For example, they may suggest reducing some of their pain medications if you are using CBD, or advise a particular time of day to use it so that it doesn’t interfere with other prescribed drugs.

The Bottom Line on CBD For Dogs With Cancer

If your pup is fighting cancer, it’s understandable that you’ll want to do all you can to make their life more comfortable.

This awful disease is bad enough in itself, yet traditional treatments such as strong painkillers, chemotherapy, and radiotherapy all come with their own troublesome side effects, leaving your dog feeling sick, tired and uninterested in food.

While CBD isn’t a cure-all for cancer, it shows great promise as a complementary treatment to help your pooch manage their symptoms and enhance the effectiveness of traditional cancer therapies.

So long as you purchase high-quality products with a minimal level of THC, and discuss its use with your vet first, giving your dog CBD can bring a wealth of benefits that will help your pooch live life to the fullest.


World Health Organization. “CANNABIDIOL (CBD) Pre-Review Report”,, 11/10/2017

Mateus Machado Bergamaschi “Safety and Side Effects of Cannabidiol, a Cannabis sativa Constituent”,, 10/10/2011

Kelly Rowett is an animal lover and experienced full-time writer who’s passionate about creating high-quality content. When she’s not typing away at her laptop, you’ll find her hiking the coast path or playing endless seaside fetch with a pair of energetic Spaniels.

Cancer In Dogs: How To Fight Back With These 3 Herbs

My old Chili developed cancer a couple of years back, after she needed an emergency spay. And I’ve seen great results with these three herbs and I’m happy to say Chili is still with me and I’ve managed to keep her cancer at bay with these three herbs.

My other dogs also get these herbs. Living in the country, I never know when farmers spray the surrounding fields so I’ve always got cancer on my mind and I always take steps to prevent it. After all, the best cure for cancer is prevention.

So here are my top three herbs for cancer …

Cannabis Oil

Cannabis has been used for medicinal purposes for thousands of years and its oil is very powerful.

Cannabis contains compounds called cannabinoids but not all of them are psychoactive (which means they can act on the brain and affect mood). Compounds such as cannabinol, cannabidiol (CBD) and other forms of THC have been shown to carry health benefits, even without the delta-9-tetrahydrocannabinol (delta-9-THC), which is the psychoactive compound.

Cannabis oil has been used for centuries for pain relief, heart, eye and skin health, but research shows that it can be effective in both treating and preventing cancer.

Spanish researchers at Complutense University published a 2009 study showing how THC could cause the death of brain cancer cells in mice. The THC caused autophagy, which is a mechanism where cancer cells destroy themselves, and the tumors shrunk in size. And this benefit was also shown in human patients with brain tumors and with cannabidiol (CBD) without delta-9-THC.

Cancer cells are different than normal body cells because they never die on their own. Normal cells that are old or damaged carry programming that causes their death. Cancer cells no longer have this ability and the mutated cells continue to grow and divide and eventually form tumors, which begin to interfere with the body’s organs. Both THC and CBD have been shown in multiple studies to cause apoptosis, or cancer cell suicide, and halt the growth of tumors.

Cannabis has also been shown to prevent metastasis, or the spread of cancer through the bloodstream. And for animals suffering from lack of appetite, which often accompanies cancer, cannabis can stimulate the appetite.

And finally, studies on cannabis show that both THC and CBD can prevent the development of blood vessels in tumors, which blocks their access to nutrition and starves them.

While there are no long-term clinical studies on cannabis in dogs with cancer, there’s enough compelling research to add it to my list of top cancer-fighting herbs.

There are many manufacturers of cannabis and CBD oil for pets in most countries (although it can be a bit difficult to find products with large amounts of THC because this is a regulated substance in most countries). But overall, CBD and cannabis oils are inexpensive and easy to use – just follow the manufacturer’s instructions.

Hemp Seed Oil

Hemp and cannabis oil both come from the same species of plant, Cannabis sativa. But hemp has been bred through the centuries for use in clothing and oils and this has changed the plant somewhat.

While hemp seed is high in cannabinoids, it contains very little THC and this is the main difference between hemp and cannabis. While most hemp carries about 1% delta-9-THC, cannabis or marijuana can vary from 5-20%.

Hemp oil also contains a healthy balance of omega-6 and omega-3 fats, which can help to reduce chronic inflammation and support the immune system. And hempseed oil has been shown to reduce metastasis and cancer growth in brain, breast and lung cancer.

Hemp seed also contains plenty of vital minerals like manganese and zinc, making it a healthy addition to any diet.

To give your dog hemp seed, you can grind it fresh or buy it as an oil. Just add a teaspoon for every pound of food (but try to avoid combining hemp with poultry as it can upset the fatty acid balance).


Turmeric and its active ingredient, curcumin, have been extensively studied for their role in cancer treatment and prevention. The American Cancer Society claims “Curcumin interferes with cancer development, growth, and spread. Recently, curcumin has received a great deal of focus because of it’s ability to reduce tumor size and kill cancer cells.”

A 2012 study on rats showed that curcumin could prevent bladder cancer in rats … and for my dogs (and most dogs), this is an important benefit since so many of our dogs are exposed to lawns treated with insecticides and herbicides, which are a major cause of bladder cancer.

The curcumin in turmeric has also been shown to inhibit the growth and spread of mammary cancer cells, prevent and inhibit brain tumors, prevent the activation of mast cells by controlling inflammation and can cause apoptosis (cancer cell death) in osteosarcoma and prevent its metastasis.

Turmeric carries many other health benefits too … it’s been shown to be just as effective as aspirin and ibuprofen in reducing pain, some studies have shown it to be just as effective as steroids and it’s a potent anti-inflammatory. And cancer and other chronic diseases such as allergies, arthritis, kidney disease and more are all caused by chronic inflammation.

The curcumin in turmeric is hard for your dog to absorb because it’s not soluble in water, so you should combine it with an oil such as coconut oil. Here are the ingredients you’ll need and directions:

You can add the Golden Paste directly to your dog’s meals by mixing it with some water or kefir. Most dogs don’t mind the taste at all!

  • 1/2 cup organic turmeric powder (make sure it’s organic so it contains lots of curcumin and is free of pesticides)
  • 1 cup filtered water
  • 1/4 cup organic, cold pressed coconut oil
  • You can also add 1 1/2 tsp freshly ground pepper to increase its absorption

Mix the ingredients together in a saucepan and set it on medium/low heat for 5-10 minutes, until it forms a paste. Let the mixture cool, then place it in a jar and store it in the fridge for no more than two weeks.

You can add the Golden Paste directly to your dog’s meals by mixing it with some water or kefir. Most dogs don’t mind the taste at all!

  • Small dogs should start with about 1/4 teaspoon per day
  • Medium dogs can start with 1/2 teaspoon per day
  • Large dogs can start with 3/4 teaspoon per day
  • Giant dogs can start with 1 teaspoon per day

This is a rough starting point, but you can increase the amount from there, up to about a Tbsp for larger dogs. But you’ll want to give turmeric in smaller amounts a few times a day because curcumin leaves the body quickly.

If your dog is on any medications, check with your vet before giving him turmeric as it can interact with some medications, including anti-inflammatory, diabetes and chemotherapy drugs.

These 3 herbs can be an important defense against cancer in your dog. And, just like it helped Chili, they can help inhibit the growth and metastasis of cancer in your dog. Let’s face it … we live in a toxic world and giving this little help to your dog is a little bit of insurance and investment in his health and longevity.