The 20 participants had subthreshold insomnia, according to their scores on the Insomnia Severity Index.

The supplement provided 3 milligrams of THC, 6 milligrams of cannabinol (CBN), 10 milligrams of CBD, and 90 milligrams of a terpene blend. During the control condition, a placebo was taken. The interventions were separated by a 1-week washout period.

The overall scores for 4 different sleep quality questionnaires indicated no statistically significant differences between the interventions.

The study was funded by the manufacturer of the cannabinoid supplement.

Does taking a cannabinoid supplement before bedtime improve sleep? Original paper