Hallucinogens: all 554 studies that test it

Page 5 of 6. Open to participants first (189), then studies with results posted, then the rest; newest registration first within each.

• Study of Safety and Effects of MDMA-assisted Therapy for Treatment of PTSDWithdrawnNCT04968938Phase 2
• Study to Evaluate the Safety of SP-104CompletedNCT04958876Phase 1
• In Vivo Study of THC-induced Immune-genome Changes at Single Cell Solution in HIV-infected HumansCompletedNCT04920539Phase 1
• Phase 1b Study in Patients With Short-Lasting Unilateral Neuralgiform Headache Attacks (SUNHA)TerminatedNCT04905121Phase 1
• The Effect of Dronabinol on the Acquisition and Consolidation of Trauma-Associated MemoriesActive, not recruitingNCT04871269Not applicable
• LSD Base and LSD Tartrate Bioequivalence and Bioavailability in Healthy SubjectsCompletedNCT04865653Phase 1
• Do Adolescents and Adults Differ in Their Acute Response to Cannabis?CompletedNCT04851392Not applicable
• Role of the Serotonin 5-HT2A Receptor in Mescaline-induced Altered States of ConsciousnessCompletedNCT04849013Phase 1
• Effects of MDMA-like Substances in Healthy SubjectsCompletedNCT04847206Phase 1
• Pilot RECAP Study in Healthy VolunteersCompletedNCT04842045Phase 1
• PSilocybin for psYCHological and Existential Distress in PALliative Care (PSYCHED-PAL)Active, not recruitingNCT04754061Phase 1/2
• The Pharmacokinetics and Pharmacodynamics of Hemp-based Topical Cannabinoid ProductsCompletedNCT04741477Phase 1
• Psilocybin for Treatment of Alcohol Use Disorder: a Feasibility StudyActive, not recruitingNCT04718792Phase 2
• Neurodynamics of Prosocial Emotional Processing Following Serotonergic Stimulation With N,N-Dimethyltryptamine (DMT) and Harmine in Healthy SubjectsCompletedNCT04716335Early Phase 1
• SPL026 (DMT Fumarate) in Healthy Subjects and MDD PatientsCompletedNCT04673383Phase 1/2
• Evaluation of Psilocybin in Anorexia Nervosa: Safety and EfficacyCompletedNCT04661514Phase 2
• The Effect of Psilocybin on MDD Symptom Severity and Synaptic DensityCompletedNCT04630964Phase 2
• Psilocybin Treatment of Major Depressive Disorder With Co-occurring Alcohol Use DisorderActive, not recruitingNCT04620759Phase 2
• The Effect of Dronabinol on Ocular Hemodynamics in Patients With Primary Open Angle GlaucomaCompletedNCT04596826Phase 2
• The Safety and Efficacy of Psilocybin in Cancer Patients With Major Depressive DisorderStatus unknownNCT04593563Phase 2
• Study of Psilocybin Enhanced Group Psychotherapy in Patients With CancerCompletedNCT04522804Early Phase 1
• Effects of MDMA Co-administration on the Response to LSD in Healthy SubjectsCompletedNCT04516902Phase 1
• Reward and Drug Effects on Mood and Brain ResponseCompletedNCT04512365Early Phase 1
• Psilocybin as a Treatment for Anorexia Nervosa: A Pilot StudyCompletedNCT04505189Phase 1/2
• Precision Functional Brain Mapping in PsilocybinCompletedNCT04501653Early Phase 1
• A Multi-Site Study of MDMA-Assisted Psychotherapy for Eating DisordersWithdrawnNCT04454684Phase 2
• An Open Label Study of the Safety and Efficacy of Psilocybin in Participants With Treatment-Resistant Depression (P-TRD)Active, not recruitingNCT04433858Phase 2
• The Safety and Efficacy of Psilocybin in Participants With Type 2 Bipolar Disorder (BP-II) Depression.Status unknownNCT04433845Phase 2
• A Double-blind, Placebo-controlled Study to Evaluate Very Low Dose LSD in Healthy Volunteers Aged 55-75 YearsCompletedNCT04421105Phase 1
• Efficacy of Inhaled Cannabis for Acute Migraine TreatmentCompletedNCT04360044Phase 2
• Effects of Dimethyltryptamine in Healthy SubjectsCompletedNCT04353024Phase 1
• Dronabinol for Post-operative Pain After Lumbar FusionStatus unknownNCT04346407Phase 4
• A RCT Comparing Dronabinol to a Placebo for Post-operative Pain in Total Joint ArthroplastyStatus unknownNCT04298528Phase 3
• Prophylactic Effects of Psilocybin on Chronic Cluster HeadacheTerminatedNCT04280055Phase 1/2
• MDMA-Assisted Psychotherapy in Veterans With Combat-Related, Refractory PTSDCompletedNCT04264026Phase 2
• Discontinuing Disease-modifying Therapies in Stable Relapsing - Onset Multiple Sclerosis (DOT-MS).Status unknownNCT04260711Not applicable
• Effects of Cannabis on Cognition and Endocannabinoid Levels in Bipolar Disorder Patients and Healthy VolunteersTerminatedNCT04231643Early Phase 1
• Comparative Acute Effects of LSD, Psilocybin and MescalineCompletedNCT04227756Phase 1
• Repeat Dosing of Psilocybin in Migraine HeadacheCompletedNCT04218539Phase 1
• THC and Ketamine Effects in Humans: Relation to Neural Oscillations and PsychosisCompletedNCT04199468Phase 1
• Bristol Imperial MDMA in Alcoholism StudyStatus unknownNCT04158778Phase 1
• Clinical and Mechanistic Effects of Psilocybin in Alcohol Addicted PatientsCompletedNCT04141501Phase 2
• Investigating the Effect of Dronabinol on Post-surgical PainWithdrawnNCT04099355Early Phase 1
• Effects of Delta9-tetrahydrocannabinol (THC) on Retention of Memory for Fear Extinction Learning in PTSD: R33 StudyCompletedNCT04080427Phase 1
• Psychological Effects of Methylenedioxymethamphetamine (MDMA) When Administered to Healthy Volunteers (MT-2)WithdrawnNCT04073433Phase 1
• Effects of Psilocybin in Anorexia NervosaCompletedNCT04052568Phase 1
• Dronabinol for Pain and Inflammation in Adults Living With Sickle Cell DiseaseTerminatedNCT03978156Phase 1
• Evaluation of Dronabinol For Acute Pain Following Traumatic InjuryWithdrawnNCT03928015Phase 2
• The Effect of Tetrahydrocannabinol on Ocular Hemodynamics in Healthy SubjectsCompletedNCT03907163Not applicable
• LSD Therapy for Persons Suffering From Major DepressionCompletedNCT03866252Phase 2
• Effects of Psilocybin in Concussion HeadacheTerminatedNCT03806985Phase 1
• Mood Effects of Serotonin AgonistsCompletedNCT03790358Phase 1
• Dronabinol Opioid Sparing Evaluation (DOSE) TrialStatus unknownNCT03766269Phase 2
• The Effects of MDMA on Prefrontal and Amygdala Activation in PTSD.WithdrawnNCT03752918Phase 1
• Beyond the Self and Back: Neuropharmacological Mechanisms Underlying the Dissolution of the SelfCompletedNCT03736980Not applicable
• Clinical, Neurocognitive, and Emotional Effects of Psilocybin in Depressed Patients - Proof of ConceptCompletedNCT03715127Phase 2
• Pilot, Syndros, Decreasing Use of Opioids in Breast Cancer Subjects With Bone MetsCompletedNCT03661892Early Phase 1
• A Study to Examine the Efficacy of a Therapeutic THX-110 for Tourette SyndromeStatus unknownNCT03651726Phase 2
• Cannabis Oil for Chronic Non-Cancer Pain TreatmentStatus unknownNCT03635593Phase 2
• Direct Comparison of Altered States of Consciousness Induced by LSD and PsilocybinCompletedNCT03604744Early Phase 1
• Tetrahydrocannabinol (THC) and SleepCompletedNCT03560934Early Phase 1
• Effects of THC and Alcohol on Driving PerformanceWithdrawnNCT03555968Phase 4
• Psilocybin - Induced Neuroplasticity in the Treatment of Major Depressive DisorderActive, not recruitingNCT03554174Phase 1
• Effect of Methylenedioxymethamphetamine (MDMA) (Serotonin Release) on Fear ExtinctionCompletedNCT03527316Early Phase 1
• Effects of THC on Emotional Memory RetrievalCompletedNCT03471585Early Phase 1
• Psilocybin and DepressionStatus unknownNCT03380442Phase 2
• Psilocybin for the Treatment of Migraine HeadacheCompletedNCT03341689Phase 1
• Psilocybin for Treatment of Obsessive Compulsive DisorderCompletedNCT03300947Phase 1
• Treatment of Chronic Pain With Cannabidiol (CBD) and Delta-9-tetrahydrocannabinol (THC)CompletedNCT03215940Early Phase 1
• Cognitive and Psychophysiological Effects of Delta-9-Tetrahydrocannabinol in Bipolar DisorderTerminatedNCT03206463Phase 1
• Evaluation of MDMA on Startle ResponseCompletedNCT03181763Phase 1
• LSD Treatment in Persons Suffering From Anxiety Symptoms in Severe Somatic Diseases or in Psychiatric Anxiety DisordersCompletedNCT03153579Phase 2
• Role of Dopamine, Serotonin and 5-HT2A Receptors in Emotion ProcessingCompletedNCT03019822Early Phase 1
• A Laboratory Model of Increasing Delta-9-tetrahydrocannabinol (THC) Potency on Cigarette SmokingCompletedNCT02961309Phase 1
• The Safety, Tolerability and Efficacy of Dronabinol, for the Treatment of Nausea and Vomiting in Familial DysautonomiaWithdrawnNCT02608931Phase 2
• Comparative Bioavailability of Dronabinol Oral Solution in Healthy VolunteersCompletedNCT02604992Not applicable
• Testing the Interactive Effects of Delta-9-Tetrahydrocannabinol and PregnenoloneCompletedNCT02576912Phase 1
• Investigation of Cannabinoid Receptor Agonist Dronabinol in Patients With Functional Chest PainWithdrawnNCT02569073Phase 4
• Gene-Environment-Interaction: Influence of the COMT Genotype on the Effects of Different Cannabinoids - a PET StudyWithdrawnNCT02492074Phase 1
• Gene-Environment-Interaction: Influence of the COMT Genotype on the Effects of Different CannabinoidsCompletedNCT02487381Phase 1
• The Role of 5-HT2A Receptor in the Perception of Self and Personal Meaning in Healthy VolunteersCompletedNCT02451072Not applicable
• The Effects of Psilocybin-Facilitated Experience on the Psychology and Effectiveness of Religious ProfessionalsCompletedNCT02421263Phase 1
• Cannabinoids, Learning, and MemoryActive, not recruitingNCT02407808Phase 1
• Ethanol and Cannabinoid Effects on Simulated Driving and Related CognitionActive, not recruitingNCT02404688Phase 1
• N-acetylcysteine Effects on TetrahydrocannabinolTerminatedNCT02335060Early Phase 1
• Influence of a Medicinal Cannabinoid Agonist on Responses to Food Images and Food IntakeActive, not recruitingNCT02310347Not applicable
• Neuronal Correlates of Altered States of ConsciousnessCompletedNCT02308969Early Phase 1
• Effects of THC and CBD on Human Episodic Memory FunctionCompletedNCT02291562Not applicable
• Processing of Salient Emotional Stimuli as a Function of Tetrahydrocannabinol (THC) and Cannabidiol (CBD)CompletedNCT02291536Not applicable
• Effects of Psilocybin-facilitated Experience on the Psychology and Effectiveness of Professional Leaders in ReligionCompletedNCT02243813Phase 1
• UW Psilocybin Pharmacokinetics StudyCompletedNCT02163707Phase 1
• The Role of the Endocannabinoid System in Sweet Taste Intensity and LikingCompletedNCT02112292Not applicable
• Probing the Cannabinoid System in Individuals With a Family History of PsychosisActive, not recruitingNCT02102113Early Phase 1
• A Study of the Abuse Potential of Dronabinol in Recreational Cannabinoid UsersCompletedNCT02094599Phase 1
• Pilot Study: Effects of Psilocybin on Behavior, Psychology and Brain Function in Long-term MeditatorsCompletedNCT01988311Phase 1
• Effects of Methylphenidate, Modafinil, and MDMA on Emotion-processing in Humans: A Pharmaco-fMRI StudyCompletedNCT01951508Early Phase 1
• Psychological, Physiological, Endocrine, and Pharmacokinetic Effects of LSD in a Controlled StudyCompletedNCT01878942Early Phase 1
• Cannabinoids and Cerebellar-Motor FunctioningCompletedNCT01853020Early Phase 1
• Combined THC and CBD Drops for Treatment of Crohn's DiseaseCompletedNCT01826188Phase 1/2
• Perioperative Δ9-THC for Postsurgical PainStatus unknownNCT01790555Phase 2

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