Cannabinol (CBN): Get to know the "sleep cannabinoid" and its therapeutic potential

Although less famous than CBD and THC, cannabinol stands out for its sedative properties and promising medicinal applications in the treatment of insomnia and inflammation

Published on 12/19/2025

Canabinol (CBN): Conheça o "canabinoide do sono" e seu potencial terapêutico

Popularly known as the "cannabinoid of old marijuana," cannabinol (CBN) is the natural result of the degradation of tetrahydrocannabinol (THC) over time. Image: Canva Pro

Cannabinol (CBN) has caught the attention of researchers and patients for its therapeutic potential, especially as a sleep inducer. Popularly known as the "cannabinoid of old marijuana," it is the natural result of the degradation of tetrahydrocannabinol (THC) over time.

When the plant is exposed to oxygen and heat, THC oxidizes and converts into cannabinol. This process significantly alters the chemical properties and effects of the original compound, generating new medicinal possibilities.

 

Characteristics and effects of cannabinol


Unlike its precursor, cannabinol is only mildly psychoactive. Research indicates that its potency is around a quarter of THC, making it an interesting option for those seeking relief without intense intoxicating effects.

On the other hand, the compound stands out for its sedative qualities. It is often found in higher concentrations in aged cannabis flowers or those that have been improperly stored, accelerating the chemical conversion.

 

Mechanism of action of cannabinol


Cannabinol interacts with the endocannabinoid system in a distinct way, being considered a weak partial agonist of the CB1 receptor. It produces about 10% of THC activity, but its effectiveness seems to depend on synergy with other plant components.

Studies suggest that the compound works best through the "entourage effect." A 1975 study demonstrated that cannabinol enhances the sedative effects of THC in rodents, although it does not cause significant sedation in humans when isolated.

"It's the combination of these different compounds that may be responsible for sedation, probably not the cannabinoid itself," researchers point out. The theory suggests that terpenes present in aged plants also play a crucial role in this process.

 

Medicinal applications of cannabinol under study


Although less studied than CBD and THC, cannabinol presents a promising list of therapeutic uses. Preliminary investigations point to various areas of action in human health:

- Insomnia: An analysis by Steep Hill Labs suggested that 5 mg of CBN could be as effective as 10 mg of diazepam, a common pharmaceutical sedative;

- Antibiotic: The compound has shown efficacy against resistant bacteria, such as MRSA (Methicillin-resistant Staphylococcus aureus);

- Analgesia: Cannabinol has demonstrated potential in pain relief through alternative mechanisms, releasing sensory nerve peptides;

- Bone Growth: Research indicates that it can stimulate bone marrow cells, aiding in fracture healing;

- Appetite and Glaucoma: Studies in rats observed increased appetite, as well as anti-inflammatory properties and the ability to reduce intraocular pressure.

 

History and availability of cannabinol


Although considered a "secondary" cannabinoid today, cannabinol has historical relevance. It was the first phytocannabinoid isolated, back in 1896, and until the 1960s it was erroneously believed to be the main responsible for the plant's effects.

Currently, specific cannabinol products, such as oils and capsules, are still rare in the market. The most accessible alternative for patients has been the use of aged cannabis flowers or late harvest, done between 7 to 10 days after the ideal point, favoring natural conversion.

 

With information from El Planteo