Cbd dosage for insomnia
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CBD Dosage for Insomnia: Clinical Trial Evidence
Low to Moderate CBD Dosage (50–150 mg) for Insomnia
Several recent clinical trials have tested low to moderate nightly doses of CBD (50 mg, 100 mg, and 150 mg) for insomnia. Studies using 50 mg and 100 mg daily for 8 weeks found no significant improvement in insomnia symptoms compared to placebo, and no positive effects on stress or anxiety were observed at these doses . Similarly, two-week nightly supplementation with 150 mg CBD did not outperform placebo in reducing insomnia severity or improving sleep outcomes, though both groups showed improvement over time, suggesting a possible placebo effect Narayan2024Narayan2022. Cognitive performance was not impaired by 150 mg CBD, and the safety profile was favorable .
Higher CBD Dosage (1 mg/kg, ~70 mg for 70 kg Adult)
A four-week study using a weight-based dose of 1 mg/kg (about 70 mg for a 70 kg adult) found significant improvements in total sleep time, sleep onset latency, wake time after sleep onset, and sleep efficiency compared to placebo. Subjective sleep quality, daytime sleepiness, and quality of life also improved, with no serious side effects reported . This suggests that even moderate doses, when administered consistently over several weeks, may benefit some individuals with chronic insomnia.
CBD Combined with THC for Insomnia
Some studies have examined the effects of combining CBD with THC. A single dose of 200 mg CBD plus 10 mg THC did not improve total sleep time and actually reduced it slightly, while also reducing REM sleep and increasing REM latency. No next-day cognitive impairment was observed, but mild side effects like dry mouth and drowsiness were common Suraev2020Suraev2022Suraev2023. Another trial using a titrated dose of medicinal cannabis oil (10 mg THC and 15 mg CBD per ml, up to 1.5 ml/day) over two weeks found significant improvements in sleep quality, duration, and daily functioning, with 60% of participants no longer classified as insomniacs at the end of the intervention .
Well-being and Safety
Across studies, CBD at doses up to 150 mg nightly was generally well tolerated, with minor side effects such as dry mouth. Some participants reported improved well-being and subjective mood, even when objective sleep measures did not show significant changes Narayan2024Narayan2024. No serious adverse events were reported in any of the trials.
Conclusion
Current research suggests that low to moderate doses of CBD (50–150 mg) taken nightly do not consistently outperform placebo for improving insomnia symptoms, though some individuals may experience subjective benefits and improved well-being. A weight-based dose of 1 mg/kg may offer more promise, but further research is needed. Combining CBD with THC may improve sleep quality for some, but can also alter sleep architecture and reduce REM sleep. Overall, CBD appears safe at these doses, but optimal dosing and long-term effects require more investigation.
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