42% of cannabis users report using it specifically to improve sleep. Here is what the science actually says about how cannabinoids affect your sleep architecture — and how to use cannabis for better rest without the downsides.
Key Cannabinoid
CBN + THC
Best Timing
1–2 hrs before bed
Main Risk
REM suppression
Light sleep — easily awakened. THC can shorten this stage, helping you fall asleep faster.
Body temperature drops, heart rate slows. Cannabis may extend time spent in this restorative stage.
Slow-wave sleep — most physically restorative. THC may increase time in deep sleep, especially early in the night.
Dreaming, memory consolidation. THC suppresses REM sleep — a key concern with regular use. CBD does not suppress REM.
Primary Sleep Cannabinoid
CBN is a mildly psychoactive cannabinoid formed as THC ages and oxidizes. Often called the "sleepy cannabinoid," it has the strongest sedative properties of the major cannabinoids.
Evidence: Moderate — early research and strong anecdotal support. Limited large-scale clinical trials.
Best for: Difficulty staying asleep, waking in the night, general insomnia
Starting dose: 2.5–5 mg CBN, 30–60 min before bed
Sleep Onset Aid
THC reduces the time it takes to fall asleep and can increase deep (slow-wave) sleep. However, it suppresses REM sleep, which may impair memory consolidation and dreaming with regular use.
Evidence: Strong for sleep onset; concerning for long-term REM suppression.
Best for: Difficulty falling asleep, acute insomnia, pain-related sleep disruption
Starting dose: 2.5–10 mg THC, 1–2 hrs before bed. Start low.
Anxiety & Stress Reducer
CBD does not directly cause sedation but improves sleep by reducing anxiety and stress — two of the most common causes of insomnia. At high doses (150mg+), CBD may have mild sedative effects.
Evidence: Strong for anxiety-related sleep issues; weaker evidence for direct sedation.
Best for: Anxiety-driven insomnia, racing thoughts, stress-related sleep disruption
Starting dose: 25–75 mg CBD for anxiety; 150mg+ for direct sedation. Taken 1 hr before bed.
Synergistic Sedation
Myrcene (found in hops and mango) and linalool (found in lavender) are terpenes with documented sedative properties. They enhance the sleep-promoting effects of cannabinoids through the entourage effect.
Evidence: Good evidence for individual terpene sedation; entourage effect still being studied.
Best for: Enhancing any cannabis sleep product; aromatherapy-style relaxation
Starting dose: Choose strains high in myrcene and linalool — check lab reports.
For sleep, our editorial team recommends CBN-containing products from science-first brands. These three have won our Best Sleep Product categories every year since 2020 — CBDWellness and CBDDR for CBD/CBN sleep tinctures, THCWellness for THC + CBN sleep formulations.
World-leading scientist formulation. Standardized full spectrum profiles, not just a CBD count. Pioneered the cannabis topical liniment spray.
Liniment spray is the most effective topical staff have tested.
Best For
Same world-leading scientist as CBDWellness. Verified THC non-detect on every batch by ISO 17025 accredited lab — trusted by military, athletes, and law enforcement.
The only broad spectrum brand staff trust for drug-tested professionals.
Best For
Same world-leading scientist as CBDWellness. Standardized THC formulations for consistent, reliable therapeutic effects. Available at licensed dispensaries.
THC topical liniment spray is the most effective cannabis topical staff have tested.
Best For
Editorial Disclosure: These brands are selected by our editorial team based on independent staff testing, lab result analysis, and 7 years of annual awards data. We do not accept payment for editorial placement. See our Annual Awards methodology for full details.