CBD and CBN are hemp-derived compounds appearing in bedtime gummies and oils. Early research suggests each may help improve sleep.
CBD, or cannabidiol, is one of more than 100 compounds found in the cannabis plant. It does not produce a high.
CBN, or cannabinol, forms as THC slowly breaks down in aging cannabis. It is often called the “sleepy cannabinoid.”
CBN is considered mildly psychoactive but generally does not cause a high the way THC does.
Three recent placebo-controlled CBN trials reported promising results, including fewer nighttime awakenings. Most CBN studies so far have been short, and larger independent trials are still to come.
CBD has been studied for sleep longer than CBN. It looks most helpful for people whose sleep is disrupted by stress or anxiety.
Not every CBD study has found a clear sleep benefit. Researchers are still working out who benefits most and at what dose.
In animal research, CBN changed sleep patterns. Early human trials reported fewer nighttime awakenings.
In one large CBN trial, 25 to 100 mg improved sleep quality about as much as 4 mg of melatonin. Adding CBD to 20 mg of CBN in one trial did not improve results further.
In a 2025 pilot trial, a blend of CBD, CBN and a small amount of THC improved sleep quality scores over 10 days. Blends containing THC face stricter legal limits.
There is no established dose of CBD or CBN for sleep. In the studies, people took their dose about one to two hours before bed.
The FDA notes CBD can affect the liver and interact with some medications. Side effects can include diarrhea, tiredness and appetite changes.
The FDA warns that combining CBD with alcohol or drugs that slow brain activity raises the risk of sedation and drowsiness. People who are pregnant or breastfeeding should talk to their doctor first.
Most people tolerate CBD well, even at doses up to 1,500 mg a day, far more than a typical gummy contains. Nightly use is still worth discussing with a doctor.
Consumers should choose lab-tested, legally compliant products, keep doses low, and check the label for THC before buying.
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