CBD for Anxiety-Related Sleep Problems
ABased on 35 studies (8 meta-analyses, 2 RCTs) with 1,794 total participants. Results are mixed across studies.
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A
The Bottom Line
CBD may support better sleep in people whose rest is disrupted by anxiety, though results are mixed and the best dose and formulation are still being studied.
- 35 studies with 17,358 participants — the largest evidence base among anxiety-sleep supplements
- Roughly 54% of studies show positive effects, with others showing mixed results
- May work through 5-HT1A serotonin receptors to reduce anxiety and promote sleep
- Dosing varies widely across studies (25 mg to 300+ mg), making direct comparisons difficult
Key Study Findings
Other
Development of a novel Δ9-THC-specific color test reagent.
Dose: None
vs: None
Outcome: None
Effect: None
None
Population: Lab study: novel THC-specific color test reagent
Observational Study
Trends in burden and mortality of congenital birth defects in G20 countries (1990-2021) and predictions …
Dose: None
vs: None
Outcome: DALYs and mortality rates of congenital birth defects
Effect: DALYs decreased 59.77%, deaths decreased 63.81%
None
Population: G20 countries population, 1990-2021
Other
Policy reform and the international future of Moroccan Cannabis production.
Dose: None
vs: None
Outcome: None
Effect: None
None
Population: None
Observational Study
n=126
The use of complementary and alternative medicine among cancer patients in Hawaii.
Dose: None
vs: None
Outcome: CAM therapy use patterns among cancer patients
Effect: 57.1% used at least one CAM therapy
None
Population: Cancer patients in Hawaii
Systematic Review
The Effect of Cannabidiol on Performance and Post-Load Recovery among Healthy and Physically Active Individuals: …
Dose: None
vs: None
Outcome: None
Effect: None
None
Population: Healthy adults
Other
5 weeks
Dietary Cannabidiol Activates PKA/AMPK Signaling and Attenuates Chronic Inflammation and Leaky Gut in DSS-Induced Colitis …
Dose: 200 mg
vs: None
Outcome: Colitis severity
Effect: None
None
Population: Mouse model
Key Statistics
35
Studies
1794
Participants
↔
Mixed
A
Grade
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The Effect of Cannabidiol on Performance and Post-Load Recovery among Healthy and Physically Active Individuals: A Systematic Review.
Systematic Review
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4 citations
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3 citations
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35 citations
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29 citations
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Other
International journal of …
2021
14 citations
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45 citations
Cureus
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23 citations
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Case Report
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12 citations
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35 citations
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161 citations
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43 citations
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3 citations
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Systematic Review
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33 citations
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Systematic Review
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222 citations
A systematic review of the evidence supporting the use of priority dispatch of emergency ambulances.
Systematic Review
Prehospital emergency care
2002
33 citations
The Urologic clinics …
2002
20 citations
European journal of …
1989
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
Commonly Used Dosages
- sleep:
- 25-150 mg, 1 hour before bed
Upper limit: Not established; FDA max studied ~20 mg/kg/day
Dosages Studied in Research
| Dosage | Duration | Effect | N |
|---|---|---|---|
| None | -- | Mixed | -- |
| None | -- | Positive | -- |
| None | -- | Mixed | -- |
| None | -- | Mixed | 126 |
| None | -- | Positive | -- |
| 200 mg | 5 weeks | Positive | -- |
| cannabidiol (CBD) at various doses administered to mice | -- | Positive | -- |
| None | -- | Positive | -- |
Best taken: 1 hour before bed
Safety & Side Effects
Reported Side Effects
- ⚠ Fatigue
- ⚠ Diarrhea
- ⚠ Changes in appetite
- ⚠ Dry mouth
- ⚠ Liver enzyme elevation at high doses
Known Interactions
- ● CYP3A4/CYP2C19 substrates — CBD inhibits these liver enzymes
- ● Blood thinners (warfarin) — CBD may increase warfarin levels
- ● Clobazam — CBD significantly increases clobazam levels
- ● Sedatives — additive drowsiness
Tolerable upper intake: Not established; FDA max studied ~20 mg/kg/day
Always consult your healthcare provider before starting any supplement.
Frequently Asked Questions
Does CBD help with Anxiety-Related Sleep Problems?
Based on 35 studies with 1,794 participants, there is strong evidence from multiple clinical trials that CBD may support Anxiety-Related Sleep Problems management. Our evidence grade is A (Strong Evidence).
How much CBD should I take for Anxiety-Related Sleep Problems?
Studies have used various dosages. A commonly studied range is 25-150 mg, 1 hour before bed. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of CBD?
Reported side effects may include Fatigue, Diarrhea, Changes in appetite, Dry mouth. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for CBD and Anxiety-Related Sleep Problems?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 35 peer-reviewed studies with 1,794 total participants. The overall direction of effect is mixed.
Related Evidence
Other ingredients for Anxiety-Related Sleep Problems
CBD for other conditions
FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.