Research Library - CBD Studies & Evidence | CBD Guru
CBD Guru

Research Library

Access peer-reviewed studies, independent lab testing, and legal information. All research is carefully curated and regularly updated.

750+
Clinical Studies
Peer-reviewed clinical trials and medical research
350+
Product Research
Independent lab testing and quality analysis
150+
Legal Information
Regulations, compliance, and legal status
Cannabidiol in Anxiety and Sleep: A Large Case Series
Shannon S, Lewis N, Lee H, Hughes SThe Permanente Journal (2019)
Clinical Trial
Anxiety
Sleep
Clinical Trial
Human Study

A retrospective case series examining CBD use for anxiety and sleep complaints. Results showed anxiety scores decreased within the first month in 79.2% of patients and remained decreased during the study duration.

847 citations
2019
Cannabidiol for the Treatment of Drug-Resistant Epilepsy in Children
Devinsky O, Marsh E, Friedman D, et al.New England Journal of Medicine (2017)
Randomized Controlled Trial
Epilepsy
Pediatric
RCT
FDA Approved

Double-blind, placebo-controlled trial of cannabidiol in patients with Dravet syndrome. The median frequency of convulsive seizures per month decreased from 12.4 to 5.9 with cannabidiol.

1243 citations
2017
Cannabidiol as a Potential Treatment for Anxiety Disorders
Blessing EM, Steenkamp MM, Manzanares J, Marmar CRNeurotherapeutics (2015)
Review Article
Anxiety
Review
Meta-Analysis

Comprehensive review of preclinical, human experimental, clinical, and epidemiological studies supporting CBD as a treatment for anxiety disorders including GAD, SAD, PD, OCD, and PTSD.

2156 citations
2015
Transdermal Cannabidiol Reduces Inflammation in Arthritis
Hammell DC, Zhang LP, Ma F, et al.European Journal of Pain (2016)
Animal Study
Pain
Inflammation
Topical
Preclinical

Study demonstrating that transdermal CBD application has therapeutic potential for relief of arthritis pain-related behaviors and inflammation without evident side effects.

634 citations
2016
CBD-Enriched Cannabis for Autism Spectrum Disorder
Aran A, Cassuto H, Lubotzky A, Wattad N, Hazan ENeurology (2019)
Observational Study
Autism
Pediatric
Behavioral
Observational

Prospective study showing that CBD-enriched cannabis is a promising treatment option for refractory behavioral problems in children with ASD.

421 citations
2019
Cannabidiol in Patients with Treatment-Resistant Epilepsy
Thiele EA, Marsh ED, French JA, et al.The Lancet Neurology (2018)
Open-Label Trial
Epilepsy
Treatment-Resistant
Long-term

Open-label, expanded access program showing cannabidiol was generally well tolerated and reduced seizure frequency in highly treatment-resistant epilepsy.

892 citations
2018
Cannabidiol for Chronic Pain: A Systematic Review
Stockings E, Campbell G, Hall WD, et al.Pain Medicine (2018)
Systematic Review
Chronic Pain
Neuropathy
Systematic Review

Systematic review of 47 studies examining CBD for chronic pain. Evidence suggests CBD may be effective for neuropathic and inflammatory pain with minimal adverse effects.

1567 citations
2018
CBD Effects on Social Anxiety in Public Speaking Test
Bergamaschi MM, Queiroz RH, Chagas MH, et al.Neuropsychopharmacology (2011)
Randomized Controlled Trial
Social Anxiety
RCT
Performance Anxiety

Double-blind study showing that pretreatment with CBD significantly reduced anxiety, cognitive impairment and discomfort in speech performance in patients with social anxiety disorder.

1834 citations
2011
Cannabidiol and Opioid Use Disorder: A Randomized Trial
Hurd YL, Spriggs S, Alishayev J, et al.American Journal of Psychiatry (2019)
Randomized Controlled Trial
Addiction
Opioid Crisis
RCT
Craving

CBD reduced cue-induced craving and anxiety in individuals with heroin use disorder. Findings suggest CBD may be a treatment option for opioid addiction.

923 citations
2019
Cannabidiol for Inflammatory Bowel Disease: A Systematic Review
Kafil TS, Nguyen TM, MacDonald JK, Chande NCochrane Database of Systematic Reviews (2018)
Systematic Review
IBD
Crohn's Disease
Ulcerative Colitis
GI

Review examining CBD for IBD treatment. While preclinical evidence is promising, more high-quality RCTs are needed to establish efficacy in humans.

445 citations
2018
Neuroprotective Effects of CBD in Neurodegenerative Diseases
Fernández-Ruiz J, Sagredo O, Pazos MR, et al.British Journal of Clinical Pharmacology (2013)
Review Article
Neuroprotection
Alzheimer's
Parkinson's
Review

Comprehensive review of CBD's neuroprotective properties relevant to Alzheimer's, Parkinson's, and Huntington's diseases through antioxidant and anti-inflammatory mechanisms.

1678 citations
2013
CBD for Insomnia and Sleep Disorders: Clinical Evidence
Babson KA, Sottile J, Morabito DCurrent Psychiatry Reports (2017)
Clinical Review
Sleep
Insomnia
Sleep Quality
Clinical Review

Review of CBD's effects on sleep. Evidence suggests CBD may improve sleep quality and duration, particularly in individuals with anxiety-related sleep disturbances.

1245 citations
2017
Cannabidiol in Schizophrenia: A Randomized Clinical Trial
McGuire P, Robson P, Cubala WJ, et al.American Journal of Psychiatry (2018)
Randomized Controlled Trial
Schizophrenia
Psychosis
RCT
Antipsychotic

Double-blind RCT showing CBD as adjunctive therapy significantly improved positive psychotic symptoms and was well-tolerated in patients with schizophrenia.

1089 citations
2018
CBD for Post-Traumatic Stress Disorder: A Case Series
Elias D, Steenkamp MM, Marmar CRJournal of Alternative and Complementary Medicine (2019)
Case Series
PTSD
Trauma
Case Series
Veterans

Retrospective chart review of PTSD patients treated with CBD. Results showed significant reduction in PTSD symptom severity in 91% of patients.

567 citations
2019
Cannabidiol and Cardiovascular Health: A Review
Sultan SR, Millar SA, O'Sullivan SE, England TJFrontiers in Pharmacology (2017)
Review Article
Cardiovascular
Blood Pressure
Heart Health
Review

Review of CBD's cardiovascular effects. Evidence suggests CBD may reduce blood pressure, improve endothelial function, and provide cardioprotective benefits.

789 citations
2017
CBD for Chemotherapy-Induced Nausea and Vomiting
Rock EM, Bolognini D, Limebeer CL, et al.British Journal of Pharmacology (2012)
Preclinical Study
Nausea
Cancer
Chemotherapy
Preclinical

Preclinical study demonstrating CBD's antiemetic effects. CBD reduced nausea and vomiting in animal models through serotonin receptor activation.

623 citations
2012
Cannabidiol for Acne: Anti-inflammatory and Sebostatic Effects
Oláh A, Tóth BI, Borbíró I, et al.Journal of Clinical Investigation (2014)
Laboratory Study
Acne
Dermatology
Inflammation
Skin Health

Laboratory study showing CBD has anti-inflammatory and sebostatic effects on human sebocytes, suggesting therapeutic potential for acne treatment.

891 citations
2014
CBD and Drug Interactions: A Comprehensive Review
Gaston TE, Friedman DEpilepsy & Behavior (2017)
Review Article
Drug Interactions
Safety
Pharmacology
CYP450

Comprehensive review of CBD drug interactions. CBD inhibits CYP450 enzymes, potentially affecting metabolism of various medications including anticoagulants and antiepileptics.

1456 citations
2017
Long-Term Safety of CBD: A 12-Month Follow-Up Study
Taylor L, Gidal B, Blakey G, et al.CNS Drugs (2018)
Safety Study
Safety
Long-term
Tolerability
Adverse Events

Long-term safety study of CBD in epilepsy patients. CBD was generally well-tolerated over 12 months with most adverse events being mild to moderate.

734 citations
2018
CBD for Multiple Sclerosis Spasticity: A Meta-Analysis
Whiting PF, Wolff RF, Deshpande S, et al.JAMA (2015)
Meta-Analysis
Multiple Sclerosis
Spasticity
Meta-Analysis
Pain

Meta-analysis of 79 trials examining cannabinoids for MS. Moderate-quality evidence supports CBD for reducing spasticity and pain in MS patients.

3421 citations
2015

Can't Find What You're Looking For?

Ask our expert community or explore our comprehensive CBD guide