can cbd oil be given to dogs for glaucoma

2021 Guide in Using CBD for Dogs With Glaucoma

Just picture this for a second, you can’t see a thing. It’s difficult to even begin to imagine what life would be like without your eyesight. Sadly, for dogs who develop glaucoma, this is an all too familiar story. Nearly half of all dogs suffering from the condition completely lose their eyesight. If you’re a pet owner with a pooch suffering from glaucoma, it’s likely you’ve already come across CBD and the benefits it can have.

There are so many stories out there that show the successful use of CBD and so this article will give you some key info around its treatment of glaucoma. We’ll also outline some top CBD pet supplements to help you on your way to a success story for your pet too.

Top CBD Pet Products for Dogs With Glaucoma

1. Honest Paws CBD Oil

Product Specifications

  • Brand: Honest Paws
  • Breed Size: All Breed Sizes
  • Total Weight: 125mg CBD per 30mL bottle
  • Special Diet: Organic, Full-Spectrum Hemp Oil, Gluten-Free, Soy-Free

Our Review

Honest Paws CBD Oil is a top-rated CBD oil for glaucoma. It’s made from 100% organic full-spectrum oil derived from a hemp plant with naturally occurring CBD. They use CO2 extraction to ensure the purity of their CBD oil products without any chemical residues. This full-spectrum hemp oil has cannabinoids and other compounds that can mitigate some symptoms of glaucoma in dogs.

The cannabinoids, along with flavonoids, terpenes, and omega fatty acids, can mitigate these symptoms by lowering your dog’s intraocular pressure, essentially relieving your dog’s eye pain. Aside from treating glaucoma in dogs, this CBD oil also has other healing properties courtesy of the terpenes. Relatively it can help manage stress, relieve joint pain, improve mobility, and more.


+ Uses organic full-spectrum hemp oil
+ No psychoactive effects
+ Supports overall wellness
+ Improves behavior and brain function
+ No GMOs, corn, soy, or other contaminants


– Possible side effects may include drowsiness, (on rarer occasions) dry mouth, low blood pressure, and diarrhea

Why We Like It – Honest Paws has been an established brand for the best CBD oil products, so you are ensured that what you’re getting is 100% pure, organic CBD oil for dogs of the highest quality. If your dog is suffering from severe pain, stress, or skin allergies, it’s recommended to get the Honest Paws Extra-Strength CBD Oil for Dogs. Check it out here.

2. HolistaPet CBD Oil

Product Specifications

  • Brand: holistapet
  • Breed Size: All Breed Sizes
  • Total Weight: 150mg CBD per 15mL bottle
  • Special Diet: Natural, Organic, Non GMO, Gluten-Free, Dairy-Free, THC-Free

Our Review

Another CBD oil that shows promise is the HolistaPet CBD Oil. It’s a broad-spectrum oil derived from a hemp plant, meaning no THC and no psychoactive effects. The organic and natural ingredients come from pure CBD extract and hemp seed oil with cannabinoid properties.

The combination of broad-spectrum CBD and hemp seed oil creates a powerful concentration that is more effective in treating canine glaucoma. CBD oils that contain cannabinoids, terpenes, and flavonoids, just like this one, can prevent damage in your dog’s eyes by reducing their elevated eye pressure.


+ Organic, all-natural ingredients
+ With balanced levels of Omega fatty acids, protein, vitamins, and minerals
+ 0%THC, non psychoactive effects
+ Relieves eye pressure, joint pain, and discomfort
+ GMO, gluten, and dairy-free perfect for dogs with allergies


– Overpriced
– Only caters to US residents

Why We Like It – If you want to prevent permanent vision loss of your dog, it’s better to give them natural remedies that can potentially alleviate the symptoms of dog glaucoma. This HolistaPet CBD Oil is one of your best options for a CBD treatment. There’s nothing to lose, so why not give it a try?

3. Canna-Pet Advanced CBD Capsules

Product Specifications

  • Brand: Canna-Pet
  • Breed Size: Large Breeds
  • Total Weight: 30 capsules per 4.82g bottle
  • Special Diet: Organic, Vegan, Cruelty-Free

Our Review

Canna-Pet’s CBD pet products never disappoint when it comes to delivering successful results. Their Canna-Pet Advanced CBD Capsules are made from organic and vegetarian ingredients, same as their Canna-Pet Advanced MaxCBD Liquid. Their advanced formula has a higher concentration of CBD and higher levels of terpene for improved bioavailability. For administering the CBD, you can open the capsule and mix it with your dog’s food.


+ Made from pure organic hemp
+ With higher CBD and terpene content
+ Non-psychoactive CBD
+ No GMOs, wheat, sugar, dairy, and preservatives
+ Third-party lab tested for purity and potency


– Not available in Australia, Canada, New Zealand, Singapore, and South Korea.
– Pricey

Why We Like It – Canna-Pet has always prioritized their customers and their pets with the quality of the products they produce. Gaining over a thousand testimonials, Canna-Pet CBD pet products has single-handedly helped many pet families. From their CBD supplements and CBD oils to their CBD dog treats.

4. King Kanine King Kalm Crunch Apple Cinnamon CBD Dog Treats

Product Specifications

  • Brand: King Kanine
  • Breed Size: All breed Sizes
  • Total Weight: 40 treats per 8oz bag
  • Special Diet: Natural, Organic, Gluten-Free

Our Review

Moving on to the delectables, here we have King Kanine’s very own King Kalm Crunch Apple Cinnamon CBD Dog Treats. Each treat contains 3 mg of cannabidiol with 0% THC content, so you don’t have to worry about any psychoactive effects. Aside from the naturally occurring CBD, other organic ingredients like apple, cinnamon, and turmeric are included in this delicious treat.

It’s professionally formulated by a licensed holistic physician and nutritionist. Each bite provides a great source of nutrients and antioxidants. Not to mention it’s gluten-free, rich in vitamins, and Omega-3 fatty acids to promote optimal health and wellness.

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+ Natural and organic ingredients
+ Part of the overall health and wellness program
+ Packed with vitamins and Omega-3 fatty acids
+ Available in 3 delicious flavors
+ With naturally derived cannabidiol


– A little pricey

Why We Like It – Spoil your furry friend once in a while and give them one of these amazing King Kalm Crunch dog treats. It’s delicious and healthy, guaranteed to make your pooch very happy. Pet owners claim that their dogs love it and more so when it alleviates their dog’s anxiety. Great to feed on dogs during stressful or anxiety-inducing situations.

5. Canna-Pet CBD Bacon Treats

Product Specifications

  • Brand: Canna-Pet
  • Breed Size: All Breed Sizes
  • Total Weight: 37-40 biscuits per 8oz bag
  • Special Diet: Wheat, Corn, Soy-Free, Organic

Our Review

Once again, Canna-Pet delivers a high-quality CBD product, this time with delicious bacon CBD dog treats. Canna-Pet CBD Bacon Treats are made from completely organic ingredients, including organic barley flour, organic maple powder, organic cinnamon, and organic hemp. This is also formulated without wheat, corn, and soy, perfect for dogs with allergies.

Made exclusively from industrial hemp, this CBD dog treat doesn’t contain any THC, thus making it psychoactive-free. Its increased levels of CBD and terpene help in improving effectiveness and bioavailability. Canna-Pet products are fantastic to use against various health issues. Anxiety, arthritis, allergies, cancer, joint problems, digestive issues, and more!


+ Made from organic and non-GMO ingredients
+ Higher levels of CBD and terpene
+ Comes in delicious bacon flavor
+ No psychoactive effects
+ Improves mood and behavior


– Pricey
– Not available in Australia, Canada, New Zealand, Singapore, and South Korea

Why We Like It – Tried and tested by many fur parents, these Canna-Pet Bacon CBD Treats are known to provide great relief and boost your dog’s mood. Take the recommended CBD dosage, and you’ll see your pupper’s condition improve in no time.

Understanding Glaucoma

Glaucoma is a disease caused by damage to the eye’s optic nerve. This usually happens when there is a build-up of fluid which then causes an unusual amount of pressure inside the eye, resulting in vision loss.

How The Eye Works

Before learning how glaucoma can affect dogs, it’s important to have a general understanding of how the eye works. Vision is determined not only by the eyes but also by nerves, and of course, the brain. This is the case in both people and animals.

When we look at something or someone, light enters our eyes through the cornea. This light is then passed through to the retina, a sensitive layer at the back of the eye. These light rays then travel through tons of nerves, pass on to the optic nerve, and then travel all the way to the brain. The brain then creates a picture, allowing us to see what’s right in front of us.

For this process to work correctly, the eye needs to continue its production of a fluid known as aqueous humor. This watery fluid nourishes the front of the eye to protect it from the environment. When functioning correctly, the fluid automatically drains from the eye. If aqueous humor doesn’t function correctly, the results can be damaging.

The unnecessary build-up creates a pressure known as Intraocular Pressure (IOP). In a normal eye producing aqueous humor correctly and then draining it too, pressure should measure between 10 and 20 mmHg (mmHg is a standard way of measuring pressure). With the correct amount of pressure, eyes keep their shape and remain strong.

If the pressure is too high, there can be significant damage to the eye, which may eventually cause vision loss. Commonly this damage affects the optic nerve, which is a vital ingredient in healthy vision. Such damage results in a condition known as glaucoma.

Types of Glaucoma in Dogs

Primary Glaucoma

In dogs with glaucoma, the pressure inside the eye can reach as much as 30 or 50 mmHg. This increase in pressure is known as chronic ocular hypertension. Primary glaucoma is the most common form of glaucoma in dogs and is generally a result of an inherited abnormality. This abnormality leads to a build-up of liquid, as the eye is unable to drain the aqueous humor correctly.

Secondary Glaucoma

Secondary glaucoma is a heightened condition of primary glaucoma. According to American Kennel Club, this happens when another eye infection is present, leading to secondary eye infections.

Some of these eye infections may include:

  • Tumors
  • Infections
  • Advanced eye cataracts
  • Eye cancer
  • Inflammation
  • Chronic retinal detachment
  • Blood clots
  • Eye lens-iris edge attachment
  • Prominence or redness of blood vessels in the white part of the eye

What are the Symptoms of Glaucoma?

Usually, the first sign of canine glaucoma is a pain in or around the eye. Dogs often avoid contact with their eye when in pain, whereas humans may rub the area. Sometimes, dogs may push their head against hard objects to try and relieve the pain. The downside is that it can be difficult to identify because your dog may only show subtle signs, which can be quite easy to miss.

Other early signs of glaucoma include:

  • Eye spasms
  • Loss of appetite
  • Behavioral changes
  • Cloudy eye
  • Enlargement of the eyes
  • Eye redness
  • Pupil dilation
  • Unresponsiveness of the pupil
  • Vision loss

However, if left untreated and there’s prolonged eye pressure, dogs affected with this condition can develop severe symptoms such as:

  • Eye lens displacement
  • Enlarged eyeballs
  • Tear in the corneal membrane
  • Aggressive behaviors
  • Deterioration of affected eye
  • Pain

Many pet owners are unaware that they can ask their vet to check their pets’ intraocular pressure. This is one of the best ways to get an early diagnosis or even prevent glaucoma altogether. It’s even more important to keep a check on your pets’ intraocular pressure if they’ve had any of the symptoms mentioned above. This means they are more likely to develop glaucoma.

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Which dog breeds are more susceptible to Glaucoma?

Sadly, it is known that certain breeds of dog are much more likely to develop glaucoma than others. So far, across the world, over 40 dog breeds have been affected by the condition and most have been inherited.

Breeds known to be prone to glaucoma include:

  • Akitas
  • Shih Tzus
  • Shar Peis
  • Poodles
  • Beagles
  • Jack Russell Terriers
  • Siberian Huskies
  • Dalmatians
  • Bullmastiffs
  • Great Danes
  • Schnauzers
  • Basset Hounds

It’s most likely that dogs will develop glaucoma between ages 3 and 7, however, it can begin at any time in their life. Typically, it doesn’t manifest before age 2 but is still possible.

Treating Glaucoma in Dogs

In cases of glaucoma, fast diagnosis and treatment are of the utmost importance. The longer the condition goes unnoticed, the more likelihood there is for long-lasting damage to the eye. Leaving the condition to manifest for too long can even result in the eye physically stretching. In cases like this, it’s bound that dogs have already reached complete and permanent blindness.

Early diagnosis is key in vets being able to slow down the onset of glaucoma. They can do this through both surgical and medical treatments.

Sadly, the difficulty with glaucoma is that it is incurable. Furthermore, the harsh realization is that almost half of all dogs diagnosed will become blind in the affected eye in less than 1 year. As a result of there being no cure, there are usually 3 focal points when it comes to treatment:

  • Pain management
  • Aqueous humor production management
  • Aqueous humor drainage management

Once diagnosed, vets often focus their initial attention on reducing intraocular pressure as speedily as they can. They normally do so by issuing specialist eye medicine. Sometimes, vets decide it’s best to immediately start draining the excess fluid from the eye. This is then followed by cyclocryotherapy, a process used to destroy the ciliary body which produces the fluid.

By doing this treatment and getting started on the right medication, nerve damage will likely be delayed, and eye health will be prolonged. It’s even possible for this treatment to have such a positive impact that it drastically reduces glaucoma’s effects and can even stop it in its tracks. Unfortunately, this scenario is very rare.

More often than not, affected dogs will lose their eye altogether. Sometimes, their eye will be replaced with a prosthetic one, or the gap may be closed. Even though losing an eye can hinder a dog’s abilities, they are often capable of living a happy and fulfilling life. They’ve often already adapted to their reducing vision since developing glaucoma and so can continue life successfully after complete removal.

It’s important to note that once glaucoma has developed in one eye, it is likely to start in the other eye in the future. Therefore, regular health checks up are key. It is strongly advised to keep a check on your dog’s intraocular pressure.

Early Research on Using CBD for Dogs With Glaucoma

Hopefully, now you have a good understanding of how glaucoma can affect dogs. Next, let’s talk about the role of CBD in its treatment. It’s likely that you’ve already heard a lot about CBD as it’s a much-talked-about subject as an alternative treatment. CBD (cannabidiol) is a molecule of the Cannabis plant. It is used for a wide variety of different conditions and illnesses.

Research into the use of CBD specifically for glaucoma goes as far back as the 1970s. This early research identified that Cannabis could lower intraocular pressure in people suffering from glaucoma. One of the earliest studies from 1971 identified that consuming Cannabis could decrease this pressure by 30%.

Since then, further studies have shown that cannabinoids like THC and CBD can help protect certain eye cells from glaucoma. Another study published in 1998 showed that Cannabis can reduce intraocular pressure in over 60% of glaucoma patients. Despite all this research, many ophthalmologists do not prescribe Cannabis as a treatment for glaucoma.

If you’re wondering why sadly, the effects of Cannabis on intraocular pressure are short-lived. Also, as glaucoma patients must keep their IOP in check 24/7, Cannabis would be needed every few hours, which certainly isn’t advised if using Cannabis contains psychoactive THC.

The most common reason doctors are hesitant in prescribing Cannabis as a treatment for glaucoma is its potential negative health factors. Smoking cannabis can actually increase IOP, as well as cause several other health risks.

The good news is that many studies suggest that CBD, CBN (cannabinol), and CBG (cannabigerol) can offer great help in reducing IOP in animals. It’d be no surprise if a certain question has popped into your head when reading this:

Is this article suggesting I allow my pet to get high?

You’ll be pleased to know that the answer is, absolutely not!

CBD does come from the Cannabis plant; however, it does not have the same “high” effects as smoking marijuana. The reason marijuana is used as a recreational drug is due to its high content of THC. THC is the psychoactive ingredient found in cannabis.

THC does offer its own benefits; but, high quantities of the chemical can be very detrimental to health. Most supplements available for pets contain little to no THC. Meaning it will not get them high but will have the desired effect of helping to reduce intraocular pressure.

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How does CBD help in alleviating symptoms of glaucoma?

The 1984 Experimental Eye Research study shows that CBD pet supplements can reduce intraocular pressure in many animals, including rats. This research also found that the more CBD took, the greater the results. This suggests that offering appropriate dosages can have long-term benefits for dogs with glaucoma.

Many pet supplements containing cannabis are produced with hemp extract, which contains all the goodness of CBD, CBN, and CBG. This is a beneficial way of adding appropriate forms of cannabis to your dog’s diet as it provides a mix of chemicals rather than just one.

How do I incorporate CBD supplements into my dog’s diet?

It is known that cannabis supplements can help improve a range of conditions in dogs, including cancer, chronic pain, anxiety, epilepsy, and of course, glaucoma. There are several ways CBD can be incorporated into any dog’s diet, one of which is by administering CBD oil straight into their mouth.

Many CBD oil products come with a dropper allowing you to easily dispense the correct dosage into their mouth. Issuing CBD in oil form is one of the most effective methods as the oil is absorbed faster, meaning the benefits are seen quicker too.

Alternatively, you can either buy ready-dosed dog treats or drop the oil onto your dog’s favorite treat yourself. By doing so, your dog may be happier to take the CBD, but the effects may take a while longer.

It can be useful for dogs with more complex illnesses to offer a mixture of oil and treats to keep their dosages at the right level. Check out this page for more information on issuing CBD.

Are Other Dogs Using CBD for Glaucoma?

We now know a growing interest in CBD pet supplements, but you may be particularly impressed to hear that the CBD pet market doubled in sales between 2008 and 2014. It’s no wonder the market is growing, considering that CBD can be used to treat a range of pet conditions.

Here are some real examples of pet owners that have turned to CBD to help treat glaucoma and have seen success in doing so.

This is Odie, a 13-year old Beagle mix from Campbell Hall, New York. During a crucial time of his life, he was diagnosed with glaucoma and has been suffering immensely. His veterinary ophthalmologist prescribed Odie two different eye drops, which need to be administered continuously 8 times a day.

However, this is only a short-term solution, and unless he gets surgery, Odie would have to be put down. At the time, Odie had an increased intraocular pressure of 35 and 30, which is really high. With Odie’s life on the line, his owner started looking for an alternative treatment.

That’s when his owner found out about Canna-Pet and decided to give it a try. His owner administered Odie with Canna-Pet’s Advanced CBD twice a day. After the continuous use of CBD, Odie’s eye pressure was back to normal, 8 and 6. The amazing thing about it is that he maintained that normal eye pressure even after 10 months. Now his eye and overall health are better than ever, thanks to Canna-Pet.

Here we have Zeus, an adorable Chow Chow who used to suffer from glaucoma. that’s right, ‘used to.’ Before taking Canna-Pet CBD Liquid, Zeus’ eye pressure was 31 and 50. As we know, the normal eye pressure is 20 and below, and anything above 20 is considered high.

After a few months of consistently taking Canna-Pet’s CBD Liquid, Zeus’s eye pressure has improved to 18 and 20. Needless to say, his owner and, of course, Zeus himself are very happy with these results.


Hopefully, this article has given you a good understanding of glaucoma and how CBD can aid pets suffering from this condition. There are various testimonials you can read about the effectiveness of CBD to treat glaucoma. The best way to learn about a product is by doing in-depth research. As you’ve reached the end of this article, I hope you found your answer to some of your questions. Fingers crossed, you are now on a journey to improving your dog’s condition and can provide some much-needed comfort. We’re sure you’ll see some great results if you follow the advice provided in this article and wish you the very best!

Expert Tip

In some states, veterinarians are not allowed to directly prescribe or recommend CBD supplements to their dog owners. However, this doesn’t include pet owners asking if they can use CBD on their dogs. So if you’re curious about using CBD as a treatment, you still may ask your vet about it and see if your dog will benefit from the healing effects of CBD.

All round pet enthusiast! I love my dogs and I love to write which is why I am one of the main contributors to DogNerdz. I know the woes of purchasing subpar products for my pets which is why I aim to provide pet lovers like myself, with the knowledge of the best products through personal experience.

My Dog Won’t Open His Eyes. What Should I Do?

As stated before, our dogs cannot come up to us and tell us that they are in pain, so there are specific signs you can watch for. If you notice your pooch pushing his head against the wall, furniture, or even your leg, you may want to call the vet as this is a sign of your dog trying to relieve pressure. Just as in humans, dogs can also show signs of glaucoma in their eyes, specifically if they are looking cloudy or red and bloodshot.