CBN: What It Is and When to Use It

CBN, or cannabinol, is a minor cannabinoid found in the cannabis plant. Like CBD, it doesn't have the psychoactive effects associated with THC.
CBN is thought to have a number of potential therapeutic uses, but research on its effects is still in the early stages.
Some preliminary studies have suggested that CBN may have sedative properties, and it is sometimes used as a sleep aid. It may also have pain-relieving and anti-inflammatory effects. CBN is also being studied for its potential as an appetite stimulant.
It is believed that CBN is formed when THC is oxidized, so it is found in higher concentrations in aged cannabis. Additionally it can be also extracted from the plant, and used to make various medical products like tinctures, capsules and topical creams, that can be consumed alone or combined with other cannabinoids and terpenes.
As the research on the effects and potential uses of CBN is still ongoing, it's hard to give definitive recommendations on when it should be used. 
However, if you're interested in trying CBN and you're considering using it to help with sleep or other conditions, it's important to talk to your doctor first. They can help you understand the potential risks and benefits of using CBN and help you determine if it's appropriate for your situation.