Can CBD Oil Shrink Tumors In Dogs

Hearing the word "tumor" or "cancer" from your vet can send chills down your spine.

Immediately you start getting all these negative thoughts of your dog potentially dying. However, not all tumors are harmful.

There are two types, benign and malignant. Malignant cancers are the types that spread to the other parts of the body, which usually results in death. But most dogs have benign kinds of cancers that won't affect your dog negatively.

The rise of cancers in dogs has caused pet owners to look for treatments that have fewer side effects. One of them is CBD oil. Studies suggest that CBD oil can drastically reduce pain and inflammation, which can improve a dog's quality of life.

So can CBD oil shrink tumors in dogs? You're about to find out right now. Keep reading on to discover how CBD oil can be a great ailment to your dog's health.

Dog with leg tumor

Dogs develop tumors the same way as humans. A tumor is defined as a weird lump that is caused by an abnormal growth of cells.

These cells grow and form a swelling, which can either be a benign tumor or malignant tumor.

Benign tumors are not cancerous, and it won't spread. However, malignant tumors are cancerous and spread to other tissues and organs in the body.

1 in 3 dogs is susceptible to developing some form of cancer in their life. So it's no wonder why a lot of people are looking at CBD oil to see if it will help.

Types of tumors that affect dogs

Here is a full list of all the cancers that most dogs get:

  • Mast cell tumors: These tumors are one of the most common. They affect a certain type of blood cell, and they appear on the skin. They grow quite fast and look red. The types of dogs that get these are short-faced dog breeds such as Pugs and French Bulldogs.
  • Papilloma: A hard, cauliflower looking wart can appear around the dog's mouth and eyes when they have this tumor. It gets infected regularly, which can be quite painful for them. These are a benign type of tumors which can be surgically removed.
  • Melanoma: These are benign tumors that affect pigmented skin cells.  They form as back or dark brown moles.
  • Lymphoma: These are malignant tumors that require chemotherapy. They form in the lymph nodes, causing them to swell and other symptoms form. These symptoms include fatigue, loss of appetite, and coughing. Swelling is detected under the jaw, shoulders, and behind the knees.
  • Hemangiosarcoma: These tumors are common in breeds such as Golden Retrievers and German Shepherds. They affect the lining in the blood vessels and can cause difficulty breathing and getting up. It also tends to spread to other parts of the body.
  • Osteosarcoma: This is a type of bone cancer that affects the bones of the legs. Dog breeds that tend to get this are bigger dogs such as Greyhounds and Great Danes. A common symptom of this tumor is limping.
  • Histiocytoma: Histocytoma is a tumor that affects the skin skells in younger dogs. These are usually benign and usually, go away within a couple of months.
  • Lipomas: These tumors occur under the skin, and the growth of fatty tissue causes them. They're usually not that serious, but once it develops, it can prevent the dog from moving during activity.

The signs of tumors

There are different symptoms for different types of tumors. Some are more noticeable than others. Keep in mind that no symptoms could show at all.

If you do see any of the symptoms listed earlier, you should take your dog to a vet for a proper diagnosis.

Here are a few symptoms that you want to watch out for because they may be signs of malignant tumors:

  • Diarrhea
  • Sores that aren't healing
  • Fatigue/lethargy
  • Stiffness
  • Coughing or difficulty breathing
  • Pain
  • Nausea and vomiting

How are they treated?

First, there is a diagnosis of what type of tumor a dog has. Vets will use one of the following depending on the symptoms:

  • CT scans or MRIs
  • Biopsy
  • X-rays/ultrasound
  • Lab test
  • Fluid analysis

When a vet diagnoses what type of tumor your dog has, they will prepare a treatment plan.

If it's a benign tumor, the vet will usually leave it, but your dog could still be in pain. This is where CBD oil can step in to help shrink tumors and relieve pain.

What is CBD oil

Cannabidiol (CBD) is one of the primary compounds in the Cannabis Sativa plant. CBD oil is made by harvesting a strain of cannabis called hemp and extracting all the chemicals. It is then mixed with a carrier oil to help with the absorption of CBD and other vital chemicals.

Tetrahydrocannabinol (THC) is another primary compound in cannabis that gets users high. However, CBD does not have this psychoactive effect. CBD has grown in popularity because of its ability to treat things like anxiety, pain, sleep, and other mental disorders.

Hemp oil vs. CBD oil

Before we move onto how it CBD oil works in the body, let's make one thing clear.

Lots of people are confusing hemp oil with CBD oil. They are not the same thing. Hemp oil is made from the seeds of the hemp plant, not the entire hemp plant. What's the difference, you ask?

Well extracting the entire hemp plant will have significantly higher levels of CBD compared to only seeds.

How does CBD work?

Every mammal, including dogs, has something called an Endocannabinoid System (ECS).  The ECS has receptors that are activated when cannabis is consumed.

So when a dog takes CBD oil, they will start to feel the effects of CBD.

Is there any risk?

Like humans, CBD for dogs has minimal to no risk. The only real danger is the lack of regulation within the CBD market.

That means not all CBD oil products are made equal, and you should be aware of what you're buying. You can't just pick any product that looks good.

As CBD is an unregulated market, this includes the risk of a product containing higher levels of THC, which is toxic for dogs.

Benefits of CBD oil for dogs

benfits of CBD oil for dogs explained

When CBD activates the ECS in dogs, they will experience effects that are beneficial to their well being. They can be used to treat a range of illnesses, including cancer and muscular injuries.

Reduced anxiety

CBD oil is great at decreasing stress and anxiety.

Reduced pain & inflammation

It's clinically proven to reduce pain and inflammation, and those are the two biggest things associated with tumors.

There are also clinical studies showing shrinkage of tumor size in dogs and tripling the life span of animals being treated with CBD and chemotherapy versus chemotherapy alone.


CBD oil aids with sleep function by helping the dog stay more awake during the day so that it can rest better at night.

Increase appetite & eliminate nausea

Lastly, CBD oil will help to increase appetite and help reduce nausea. These are two common problems during cancer treatment in which CBD can help.

Can CBD oil shrink tumors in dogs?

How CBD aids with tumor symptoms

Common symptoms of malignant tumors in dogs include things like nausea and vomiting, lack of appetite, pain, and fatigue.

Research shows that CBD can help dogs suffering from these symptoms.

For example, this study shows that ECS plays a role in the mediation of nausea and vomiting. The ECS is made up of 2 receptors, CB1 and CB2. They are found all over the body, including the gastrointestinal tract. When these receptors are stimulated, it helps reduce nausea and vomiting.

This is just one example of how CBD helps with the symptoms. It also helps with things like pain by blocking pain signals to the brain.

So CBD oil not only helps with the symptoms of tumors but also helps during the treatment process.

Anti-tumor agent

Another  study shows that CBD can slow tumor growth.

One of the ways it does this is by impeding the process of forming new blood vessels. This is also known as Angiogenesis.

Read this before giving CBD to your dog

Before you buy CBD oil, there are a few things that you must be aware of.

3rd part lab tested

The first thing you want to check for is a 3rd party lab test. This test shows the cannabinoid profile of your product to ensure it doesn't exceed the THC amount for your dog.

Higher amounts of THC can be dangerous for dogs. These tests also check for heavy metals or any other impurities that may be harmful.

lab test results

lab test example

Co2 extraction method

When the chemicals are extracted from the hemp plant, it's essential to know how it was extracted because there are different methods.

Standard methods like solvent extraction leave residues in CBD oil that can be harmful.

The cleanest type of extraction will be CO2 which uses machines.

Whole plant extract

Whole plant extract means all the essential cannabinoids, terpenes, vitamins, and other plant benefits are extracted.

Think of an apple, for example. Even though apples are high in vitamin C, there are also other benefits, such as potassium. The hemp plant works the same way.

You should look for a CBD oil product that is labeled full-spectrum and has a lab-test to verify this.

Good tinctures for dosing

Tinctures should be made out of plastic and not glass because a dog can try to bite it. When trying to dose the oil for your dog, this can end badly.

Carrier oil

When choosing a type of CBD oil, you always want to check the ingredients. When the hemp plant is extracted, it's placed into a carrier oil to help with the absorption process.

Carrier oils such as MCT oil is not suitable for dogs. It can upset their stomach because MCT is from another plant.

Ideally, you want the carrier oil to be from the same plant. So you should get a product that uses hemp seed oil as a carrier.

Drug interactions

If your dog is currently going through cancer treatment, you must let your vet know that your dog is taking CBD oil. There may be some drugs that they're taking that may not work well with CBD.

How to dose CBD oil for dogs

How to dose CBD oil for dogs

Dosing for dogs is relatively simple. It's recommended that they should take 1mg of CBD per 10lbs of weight. So if your dog weighs 20lbs, they should take 2mg of CBD.

Different CBD oil bottles have different potencies, so be sure to check how many mg of CBD there is per drop. This should be mentioned in the product.

Let's talk about the best ways to give your dog CBD.

Rub it on their gums

Putting a drop on your finger and then rubbing it into their gums is the best way to give them CBD. When you do this, it gets absorbed the quickest because the glands in the mouth help transport the cannabinoids into the bloodstream.

When they ingest it, it takes a lot longer to feel the effects because it has to be processed by their digestive system before reaching the bloodstream.

Put it on a treat

If your dog doesn't respond well to you putting your fingers near their mouth, you can try this. The next time you give them a treat, drop some CBD oil on it before they eat it.

Final thoughts on tumors and CBD oil

So can CBD oil shrink tumors in dogs?

Yes and no. The biggest thing that CBD oil can help with is pain and inflammation, which is connected to symptoms of some tumors.

Also, when a dog goes through cancer treatments, there are other issues that CBD can help with. It can help with appetite and nausea.

Nabrissa Simpson

I'm the co-owner of CBDTornado. I live in Star, Idaho and CBD oil has got rid of my anxiety and muscle pains. I take 50mg a daily and haven't looked back since.

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