What is CBN and what are its effects?

• What is CBN and how is it produced?
• Discovered somewhat by accident
• The effects of CBN
  • Sedative effects
  • Anti-inflammatory effects
  • Antibacterial properties
  • Neuroprotection
• CBN and other cannabinoids
• CBN products
• Conclusion
• FAQ

What is CBN and how is it produced?

CBN (cannabinol) is a secondary cannabinoid — it is not produced directly by biosynthesis from a precursor acid (such as THC from THCA or CBD from CBDA), but by the oxidation of THC. Oxidation occurs through exposure to air, heat and light. When THC degrades, CBNA (cannabinolic acid) is first formed, from which carbon dioxide is split off when heated, forming CBN. The CBN content in fresh plants is therefore very low.

Discovered somewhat by accident

Did you know that cannabinol was the first cannabinoid to be identified and isolated from cannabis? And that was long before the discovery of THC and CBD! It happened at the end of the 19th century at Cambridge University, when three British chemists, Thomas Barlow Wood, William Thomas Newton Spivey and Thomas Hill Easterfield, were searching for active substances in various plant extracts.

However, the discovery of cannabinol was accidental. The scientists were trying to figure out which substance in Indian hashish was responsible for its intoxicating effects. Today, this substance is known as THC. As already mentioned, CBN is produced during the degradation of cannabis, and since there were no methods to prevent degradation at the end of the 19th century, the scientists isolated CBN instead of THC.

The effects of CBN

Cannabinoids act in the human body primarily through the endocannabinoid system. This system of receptors, endocannabinoids and enzymes influences a wide range of bodily functions and processes. The main components are:

• CB1 receptors: found mainly in the central nervous system and responsible for psychoactive effects.
• CB2 receptors: found mainly in tissues and cells of the immune system, they regulate pain, inflammatory processes and immune response.

Although CBN is derived from THC, it does not affect the body in the same way. While THC activates CB1 receptors and has psychoactive effects, CBN only has a weak effect on these receptors.

Sedative effects

If there is one property for which CBN is known, it is its ability to relax the mind and body and induce drowsiness. These effects of CBN are not only attributed to users, but are also confirmed by modern studies.

For example, researchers at the University of Sydney found in 2024 that cannabinol improves overall sleep in rats without causing intoxication.

Sedative effects were also observed in human trials. "Our research confirms that CBN has potential for the treatment of sleep disorders. However, in our clinical study, CBN was only administered once. The next step will be more extensive studies involving repeated dosing," said Iain McGregor, director of research in Sydney. The Australian team has also launched a preclinical drug development programme focused on CBN.

In another study, adults suffering from poor sleep quality were given 20 mg of CBN before bedtime for one week. CBN significantly reduced the number of night-time awakenings and the subjective feeling of disturbed sleep compared to a placebo. At the same time, it was found that combining CBN with CBD did not bring about any further improvement in sleep.

Anti-inflammatory effects

Another important property of CBN is its potential anti-inflammatory effects. CBN acts on CB2 receptors in the endocannabinoid system in the human body, triggering processes in immune cells that lead to a reduction in the production of inflammatory cytokines. There is also programmed death of excess immune cells, which are responsible for excessive immune responses and are often the cause of tissue damage, chronic inflammation and autoimmune diseases.

Some findings also suggest that CBN may influence pain perception by acting on TRPA1 pain receptors.

Antibacterial properties

Laboratory tests in test tubes have shown that CBN can inhibit the growth of highly resistant bacteria, such as MRSA strains of Staphylococcus aureus, which are resistant to common antibiotics. This staphylococcus is responsible for purulent skin infections, hair follicle inflammation, cellulitis, and can cause infection of the bloodstream, bones and joints.

Neuroprotection

Cannabinoids are known for their neuroprotective effects, and CBN is no exception. Research shows that CBN protects nerve cells from oxidative stress, which occurs when the body is unable to neutralise harmful free radicals using antioxidants.

Oxidative stress leads to neurodegenerative diseases such as Alzheimer's and Parkinson's disease. CBN could therefore play an important role in the prevention and treatment of these diseases.

Researchers at the Salk Institute have even developed more potent derivatives from parts of the CBN molecule that are responsible for its neuroprotective effects, which could be used as drugs. "We were looking for CBN analogues that could get into the brain more effectively, act faster and have a stronger neuroprotective effect than CBN itself," says Zhibin Liang, lead author of the study.

CBN and other cannabinoids

CBN is not psychoactive and is primarily known for its sedative and antibacterial effects. CBD is also non-intoxicating, but rather induces a feeling of relaxation without sedation. THC is the main psychoactive component of cannabis. This strictly regulated substance could have particular potential in the development of pain relief medications. CBN derivatives, such as CBNO, are also beginning to appear on the market.

To give you a better idea of how individual cannabinoids work and how they differ, we have prepared a clear comparison of their effects, receptor bindings and possible uses.

The effects of cannabinoids can influence and enhance each other. This mutual support is called the entourage effect. The synergy of cannabinoids opens the door to a wide range of therapeutic uses. For example, a 2006 study showed that CBN in combination with other cannabinoids may be effective in stopping the growth of tumour cells, whereas these substances did not have high potential when used in isolation.

CBN products

Although CBN is still less well known than other cannabinoids, its popularity is growing rapidly — and with it, the range of products available on the market is gradually expanding. Most of them are primarily aimed at promoting sleep.

You can purchase CBN oil, which offers flexible dosing — if you want fast-acting effects, apply it under the tongue; if you prefer a gradual and longer-lasting effect, you can mix it into food or drink.

CBN vapes offer almost immediate effects because the cannabinoid is absorbed directly into the bloodstream through the lungs. They are ideal for those seeking quick relief. They are available in many flavours.

CBN capsules will be appreciated by those who want to enjoy the effects of cannabinoids but do not like the taste of cannabis.

Conclusion

Although CBN has been overshadowed by the cannabinoids CBD and THC, its importance is no less significant. Current findings suggest that CBN has therapeutic potential, and not only ongoing studies but also evolving legislation may help it gain its deserved role in the future of cannabis medicine and wellness products.

CBN is non-psychoactive, can improve sleep, reduce inflammation, kill bacteria and protect nerve cells. There are a number of CBN-containing products on the market, such as oils, capsules and vapes.

Sources:

Author: Natálie Kubíčková

Photo: AI

"All information provided on this website, as well as the information provided through this website, is for educational purposes only. None of the information contained herein is intended as a substitute for medical diagnosis and such information is not to be considered medical advice or recommended treatment. This website does not promote, endorse or advocate the legal or illegal use of narcotic drugs or psychotropic substances or the commission of any other illegal activity. Please see our Disclaimer for further information."