Why more Michiganders are ditching melatonin for this cannabis compound

More cannabis consumers are turning to a lesser-known cannabinoid called cannabinol—or CBN—for better sleep. But the science behind it is still catching up.

Ask Dr. Litinas is a column that publishes twice monthly as part of The MichiGanja Report—our free, weekly newsletter about all things marijuana. Click here to sign up.

MICHIGAN—Cannabis is a complex medicinal plant that produces a wide variety of biologically active compounds. The most well-known are cannabinoids, a group of molecules that interact with the human body through a regulatory network known as the endocannabinoid system.

While most Michiganders are familiar with THC and CBD, more than 100 other cannabinoids have been identified in the cannabis plant—each with potentially unique effects.

As research continues, more attention is being given to lesser-known cannabinoids like CBN, or cannabinol, which has been shown to be a potential tool for sleep support in some patients.

What are cannabinoids?

Cannabinoids are naturally occurring chemical compounds produced by the cannabis plant. 

They are biologically active—meaning they interact with receptors in the human body and influence many physiological processes. And by now, most Michiganders are familiar with the most abundant cannabinoids, THC and CBD. But those are only part of the bigger picture.

Others (which we won’t discuss in this column) include CBG, CBC, THCV, and CBN. But here’s the most important takeaway for now: Each cannabinoid has a slightly different chemical structure, meaning it may interact with the body’s endocannabinoid system in a different way.

What is CBN?

CBN—or cannabinol—is a cannabinoid that forms as THC breaks down over time. It’s usually found in fresh cannabis but can also be concentrated in extracts, tinctures, and other products.

When cannabis flower is exposed to oxygen, heat, or light, THC gradually converts into CBN—meaning older cannabis tends to contain higher levels. And unlike THC, the latest science shows CBN is only mildly psychoactive and its effects are typically subtle.

Researchers think CBN may affect sleep regulation, pain signaling, inflammation, appetite, and other nervous system activities. However, research is still limited compared to THC and CBD. Many claims come from early studies, animal data, or patient reports—not large clinical trials.

CBN and sleep

One of the most common reasons people seek out CBN is for sleep support—namely because it has been widely marketed on Michigan’s cannabis market as a natural sleep aid. 

Anecdotal reports are strong, but human clinical research is limited. Some studies suggest it may help reduce nighttime awakenings and improve sleep quality—especially when combined with THC or CBD. Research also suggests that CBN may have mild calming effects, but it’s important to note that terpenes and other cannabinoids may contribute to the overall effect.

In other words, the experience depends on the full product—not just CBN alone.

And as with all cannabis products, individual responses can vary significantly.

A quick word of caution: Even though CBN is often marketed as gentle, it is still a biologically active compound. Possible side effects reportedly include drowsiness, dizziness, changes in blood pressure, drug interactions, and increased sedation with other medications.

Patients with underlying conditions—especially heart disease or neurological issues or those taking multiple medications—should always consult a healthcare provider and use caution. 

As with all cannabis products: Start low and go slow.

Timing also matters: When consumed as an edible, effects are typically strongest about two or three hours after ingestion, though this varies. For sleep, taking it about two hours before bed may help with falling asleep. Taking it closer to bedtime may help with staying asleep.

Final thoughts

Early evidence suggests CBN may play a role in supporting sleep, relaxation, and overall wellness but more research is needed to fully understand the benefits and risks.

Cannabis is a powerful medicinal plant, and even lesser-known cannabinoids like CBN can have real physiological effects. Using these products thoughtfully, at appropriate doses, and with medical awareness, is essential for safe and effective use.

This content is for education, not medical advice. Talk to your doctor before making any health decisions—especially when it comes to cannabis. Products are only for adults ages 21 and up.

READ MORE: Why weed with the same THC percentages can feel completely different

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