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EducationAll you need to know about CBD oil for ulcerative colitis

All you need to know about CBD oil for ulcerative colitis

4 min read

March 27, 2024

Lucy MacKinnon

All you need to know about CBD oil for ulcerative colitis

As more research is conducted into the potential therapeutic effects of medical cannabis and CBD oil, more possible benefits are discovered. One such discovery is the potential for CBD oil to help alleviate certain symptoms in people suffering from ulcerative colitis.

Contents

Some older research documented in the U.S. National Library of Medicine had already shown that CBD oil may help reduce symptoms of inflammatory bowel disease (IBD) by acting as an anti-inflammatory agent. Today, more recent research supports this idea, with a 2018 study by the Journal of Clinical Investigation demonstrating that cannabinoid-activated endocannabinoids in the gut can prevent inflammation while maintaining homeostasis.

Essentially, CBD oil may help our guts ‘turn off’ inflammation caused by ulcerative colitis. To begin understanding how this works, we must examine how CBD oil interacts with the body’s endocannabinoid system.

Tips for Taking CBD Oil for Ulcerative Colitis

If you want to try treating ulcerative colitis with CBD oil, then it is important to know a little about the different types of CBD oil that are available. These are:

  • Full-spectrum CBD
  • Broad-spectrum CBD
  • CBD isolates

Full-Spectrum CBD

Full-spectrum CBD contains all the natural components found in the original cannabis or hemp plant. These include terpenes, flavonoids, and fatty acids, as well as all the cannabinoids. Full-spectrum CBD oil may also contain trace amounts of THC, but here in the UK, that level must be less than 0.2% THC.

Broad-Spectrum CBD

Broad-spectrum CBD is similar to full-spectrum, as it contains the majority of the compounds in the cannabis plant. Where it differs is that all traces of THC have been removed.

CBD Isolate

CBD isolates have had all undesired cannabinoids removed, along with terpenes and flavonoids. A CBD isolate should be between 97% – 99% pure CBD product.

So, which option is best?

Again, only a doctor that has experience providing medical cannabis treatment options can properly advise you on this. However, many people find that full-spectrum CBD is the most effective as it contains all the natural components found in the original cannabis or hemp plant and therefore provides a more complete range of benefits. 

Best practices for taking CBD oil for ulcerative colitis

With studies establishing a clear link between cannabinoids and their potential to help relieve symptoms of ulcerative colitis, it is important to understand the best practices for using CBD oil. You should know the right type of CBD for your condition, as well as the correct starting dosage and incremental increases.

Potential side effects of CBD oil and how to mitigate them

CBD oil is generally well tolerated, but some people may experience side effects, especially at very high doses. Potential side effects include:

  • Mood changes
  • Decreased appetite
  • Drowsiness
  • Dry mouth
  • Diarrhoea

Side effects can be mitigated by lowering the dose of CBD oil.

How to monitor the effectiveness of CBD oil for treating ulcerative colitis

As the research so far indicates that CBD oil has a noticeably positive effect on the quality of life of people suffering from ulcerative colitis, this is where you should focus your monitoring. Try rating your discomfort and pain on a scale of 1-5 over the course of at least a week prior to beginning CBD oil treatment, and then continue to rate once the CBD oil treatment starts. 

Conclusion

With research on IBS from last year discovering that 1 in 123 people in the UK is living with an IBD such as ulcerative colitis or Crohn’s disease, it is important that we educate ourselves on all the possible treatments. While more studies are needed, recent research has shown that CBD oil has real potential to help reduce symptoms in some people suffering from ulcerative colitis.

If you would like to find out more about medicinal cannabis and how it may be able to make a true difference in the severity of your symptoms, we are here to help.

Releaf understands that medical cannabis can be life-changing for many people. That's why we offer tailored monthly packages based on your cannabis prescription, specialist consultations for medical cannabis, and a unique medical cannabis card for protection. 

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Authors
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Lucy MacKinnon

With five years of journalism and healthcare content creation under her belt, Lucy strives to improve medical cannabis awareness and access in the UK by producing high quality, credible content.

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All of our articles are written by medical cannabis experts, guided by strict sourcing guidelines, and reference peer-reviewed studies and credible academic research. Our expert clinical team and compliance specialists provide valuable insights to ensure accuracy when required. Learn more in our editorial policy.

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Further reading

Can medical cannabis and CBD support people with sleep apnoea (updated)?

Sleep apnoea can affect concentration, energy levels and overall wellbeing. This updated guide explains how medical cannabis and CBD may support people living with sleep apnoea, what current research shows and how treatment works in the UK. It also covers risks, product types and the role of established treatments such as CPAP.

11. 12. 2025

Sam North

Cannabis and CBD for acne: evidence, treatments and safety (Updated)

Recent studies show that CBD and other cannabinoids may help reduce acne by balancing sebum production, calming inflammation and supporting skin repair. This guide examines the science, safety and access to medical cannabis treatments for acne in the UK.

22. 10. 2025

Lucy MacKinnon

The current research on CBD oil and medical cannabis oil for skin cancer

Research into cannabinoids for skin cancer is accelerating. Studies from 2024 and 2025 suggest that CBD (and THC) may influence inflammation, oxidative stress, and cell growth, but clinical evidence in humans is still limited. This article explains the science, safety, and how UK patients can access medical cannabis treatment

22. 10. 2025

Sam North

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