Hallucinogens: all 554 studies that test it

Page 3 of 6. Open to participants first (189), then studies with results posted, then the rest; newest registration first within each.

• Psilocybin Therapy for Depression and Anxiety in Parkinson's DiseaseCompletedNCT04932434Phase 2Results posted
• Study Comparing Two Versus Three Active MDMA-assisted Sessions in U.S. Military Veterans With Chronic PTSDTerminatedNCT04784143Phase 2Results posted
• The Safety and Efficacy Of Psilocybin as an Adjunctive Therapy in Participants With Treatment Resistant DepressionCompletedNCT04739865Phase 2Results posted
• Dronabinol in Total Knee Arthroplasty (TKA)CompletedNCT04734080Phase 4Results posted
• A Multi-Site Open-Label Extension Study of MDMA-Assisted Psychotherapy for PTSDCompletedNCT04714359Phase 3Results posted
• Safety and Efficacy of Psilocybin for Body Dysmorphic DisorderCompletedNCT04656301Phase 2Results posted
• Visual Surround Suppression and Perceptual Expectation Under PsilocybinTerminatedNCT04424225Phase 1Results posted
• Effects of Pregnancy-associated Hormones on THC Metabolism in WomenCompletedNCT04374773Phase 4Results posted
• Age-Related Effects of THCCompletedNCT04294966Early Phase 1Results posted
• Nutrition and Pharmacological Algorithm for Oncology Patients StudyTerminatedNCT04155008Phase 4Results posted
• Behavioral Pharmacology of THC and Alpha-pineneCompletedNCT04130633Phase 1Results posted
• A Multi-Site Phase 3 Study of MDMA-Assisted Psychotherapy for PTSD (MAPP2)CompletedNCT04077437Phase 3Results posted
• Effects of Drugs on Responses to Brain and Emotional ProcessesCompletedNCT04053036Early Phase 1Results posted
• Open Label Study of MDMA-assisted Psychotherapy for Treatment of PTSD With Optional fMRI Sub-StudyCompletedNCT04030169Phase 2Results posted
• A Study of Psilocybin for Major Depressive Disorder (MDD)CompletedNCT03866174Phase 2Results posted
• Individual Differences in Drug ResponseCompletedNCT03809546Early Phase 1Results posted
• Developing a Mobile Method to Measure THC-induced ImpairmentCompletedNCT03804840Early Phase 1Results posted
• Effect of Stimulant Drugs on Social PerceptionCompletedNCT03790618Phase 1Results posted
• The Safety and Efficacy of Psilocybin in Participants With Treatment Resistant DepressionCompletedNCT03775200Phase 2Results posted
• Cannabinoids for Pain Control During Medical AbortionCompletedNCT03604341Phase 4Results posted
• A Multi-Site Phase 3 Study of MDMA-Assisted Psychotherapy for PTSD (MAPP1)CompletedNCT03537014Phase 3Results posted
• Dronabinol in Trichotillomania and Other Body Focused Repetitive BehaviorsCompletedNCT03530800Phase 2/3Results posted
• Study of Safety and Effects of MDMA-assisted Psychotherapy for Treatment of PTSD (Canada)CompletedNCT03485287Phase 2Results posted
• Effects of Salvinorin A on Brain FunctionCompletedNCT03418714Phase 1/2Results posted
• Efficacy of Psilocybin in OCD: a Double-Blind, Placebo-Controlled Study.CompletedNCT03356483Phase 1Results posted
• Open Label Multi-Site Study of Safety and Effects of MDMA-assisted Therapy for Treatment of PTSDCompletedNCT03282123Phase 2Results posted
• Effects of Psilocybin in Major Depressive DisorderCompletedNCT03181529Phase 2Results posted
• Combined Alcohol and Cannabis Effects on Skills of Young DriversCompletedNCT03106363Not applicableResults posted
• Efficacy of a Therapeutic Combination of Dronabinol and PEA for Tourette SyndromeCompletedNCT03066193Phase 2Results posted
• Effects of MDMA on Emotional and Social MemoriesCompletedNCT03050541Not applicableResults posted
• Effects of Delta-9 Tetrahydrocannabinol (THC) on Retention of Memory for Fear Extinction Learning in PTSD: R61 StudyCompletedNCT03008005Phase 4Results posted
• Marijuana's Impact on Alcohol Motivation and ConsumptionCompletedNCT02983773Phase 2Results posted
• Persisting Effects of PsilocybinCompletedNCT02971605Phase 1/2Results posted
• Psilocybin-assisted Group Therapy for Demoralization in Long-term AIDS SurvivorsCompletedNCT02950467Phase 1Results posted
• MDMA-Assisted Cognitive-Behavioral Conjoint Therapy (CBCT) in Dyads in Which 1 Member Has Chronic PTSDCompletedNCT02876172Phase 1/2Results posted
• Trial of Dronabinol Adjunctive Treatment of Agitation in Alzheimer's DiseaseCompletedNCT02792257Phase 2Results posted
• Pilot Study of the Safety and Efficacy of Four Different Potencies of Smoked Marijuana in 76 Veterans With PTSDCompletedNCT02759185Phase 2Results posted
• Individual Differences in the Response to DrugsCompletedNCT02485158Not applicableResults posted
• Cannabinoid Control of Fear Extinction Neural Circuits in HumansCompletedNCT02472847Phase 4Results posted
• MDMA-Assisted Psychotherapy for Anxiety Associated With a Life-Threatening IllnessCompletedNCT02427568Phase 2Results posted
• Cannabinoid Control of Fear Extinction Neural Circuits in Post-traumatic Stress DisorderCompletedNCT02069366Not applicableResults posted
• A Double-Blind Trial of Psilocybin-Assisted Treatment of Alcohol DependenceCompletedNCT02061293Phase 2Results posted
• Psilocybin-facilitated Treatment for Cocaine UseCompletedNCT02037126Phase 2Results posted
• Phase 2 Pilot Safety Study of MDMA-assisted Therapy for Social Anxiety in Autistic AdultsCompletedNCT02008396Phase 2Results posted
• Cannabis, Schizophrenia and Reward: Self-Medication and Agonist Treatment?CompletedNCT01964404Phase 1Results posted
• Randomized, Double-blind, Controlled of MDMA-assisted Psychotherapy in 12 Subjects With PTSDTerminatedNCT01958593Phase 2Results posted
• Effects of MDMA on Social and Emotional ProcessingCompletedNCT01849419Not applicableResults posted
• The Effects of Cannabis Use in People With Schizophrenia on Clinical, Neuropsychological and Physiological PhenotypesTerminatedNCT01832766Phase 1/2Results posted
• Dose-Response Study of MDMA-assisted Psychotherapy in People With PTSDCompletedNCT01793610Phase 2Results posted
• Effect of a Cannabinoid Agonist on Colonic Sensory Functions in Patients With Irritable Bowel SyndromeCompletedNCT01786109Phase 2Results posted
• Safety and Efficacy Study of Dronabinol to Treat Obstructive Sleep ApneaCompletedNCT01755091Phase 2Results posted
• Randomized, Double-blind, Placebo-Controlled Pilot Study of MDMA-assisted Therapy for PTSDCompletedNCT01689740Phase 2Results posted
• Combination of Dronabinol and Clonidine for Cannabis Dependence in Patients With SchizophreniaTerminatedNCT01598896Phase 2/3Results posted
• The Effects of Cannabinoid on Patients With Non-GERD Related Non Cardiac Chest PainCompletedNCT01598207Phase 4Results posted
• Cannabis Effects on Driving-related Skills of Young DriversCompletedNCT01592409Not applicableResults posted
• Effects and Therapeutic Potential of Psilocybin in Alcohol DependenceCompletedNCT01534494Phase 2Results posted
• Additional MDMA-assisted Therapy for People Who Relapsed After MDMA-assisted Therapy TrialCompletedNCT01458327Phase 2Results posted
• Effects of Dronabinol (Oral THC) on Cannabis UseCompletedNCT01394185Phase 1/2Results posted
• Effect of Cannabinoid Agonist on Gastrointestinal and Colonic Motor Functions in Patients With Irritable Bowel Syndrome (IBS)CompletedNCT01253408Phase 2Results posted
• Study Comparing Three Doses of MDMA Along With Therapy in Veterans With Posttraumatic Stress DisorderCompletedNCT01211405Phase 2Results posted
• Marinol in Trichotillomania or Obsessive Compulsive DisorderCompletedNCT01093976Phase 2Results posted
• Combined Pharmacotherapy for Cannabis DependencyCompletedNCT01020019Phase 2/3Results posted
• Psilocybin Cancer Anxiety StudyCompletedNCT00957359Early Phase 1Results posted
• Cannabis and Schizophrenia: Self-Medication and Agonist TreatmentCompletedNCT00946348Phase 1Results posted
• Lysergic Acid Diethylamide (LSD)-Assisted Psychotherapy in People With Illness-related AnxietyCompletedNCT00920387Phase 2Results posted
• The Effect of Prescription Medications in Marijuana UsersCompletedNCT00893074Phase 1/2Results posted
• Prevention of Postoperative Nausea and Vomiting (PONV) in Surgical PatientsCompletedNCT00757822Not applicableResults posted
• Comparison of the Analgesic Effects of Dronabinol and Smoked Marijuana in Daily Marijuana SmokersCompletedNCT00743119Phase 2Results posted
• Cannabis for Spasticity in Multiple SclerosisTerminatedNCT00682929Phase 1/2Results posted
• Palonosetron and Dexamethasone With or Without Dronabinol in Preventing Nausea and Vomiting in Patients Receiving Chemotherapy For CancerCompletedNCT00553059Phase 3Results posted
• Ph1 Marinol Interaction Study - Part 2 - 1CompletedNCT00490269Phase 1Results posted
• Effectiveness Study of Dronabinol and BRENDA for the Treatment of Cannabis WithdrawalCompletedNCT00480441Phase 2Results posted
• Psychopharmacology of Psilocybin in Cancer PatientsCompletedNCT00465595Phase 2Results posted
• Randomized Placebo-controlled Study of MDMA-assisted Therapy in People With PTSD - IsraelTerminatedNCT00402298Phase 2Results posted
• Study of 3,4-Methylenedioxymethamphetamine-assisted Psychotherapy in People With Posttraumatic Stress DisorderCompletedNCT00353938Phase 2Results posted
• A Pilot Study of Dronabinol for Adult Patients With Primary GliomasCompletedNCT00314808Phase 1Results posted
• Dronabinol Treatment for Marijuana AddictionCompletedNCT00217971Phase 2Results posted
• MDMA-Assisted Psychotherapy in People With Posttraumatic Stress DisorderCompletedNCT00090064Phase 2Results posted
• Study of Midomafetamine in Healthy AdultsActive, not recruitingNCT07584720Phase 1
• Group Retreat Psilocybin Therapy for the Treatment of Anxiety and Depression in Patients With Metastatic Solid Tumors or Incurable Hematologic MalignanciesActive, not recruitingNCT07336238Phase 2
• Safety and Preliminary Efficacy of Organic Whole Psilocybin-Containing Mushrooms to Treat Patients Suffering From PTSDActive, not recruitingNCT07275970Phase 1
• Sex Differences in Neurobehavioral Response to THCTerminatedNCT07225777Phase 2
• Clinical Study to Evaluate the Effects of Oral Delta-9-tetrahydrocannabinol (Δ9-THC) With and Without Alcohol on Perception and Driving Performance in Healthy AdultsCompletedNCT07176208Phase 1
• Drug Effects on Mood and Behavior - ExpectancyCompletedNCT07061886Early Phase 1
• A Study Assessing Brain Activity, Safety, Tolerability, and Pharmacokinetics Following Multiple Doses of MLS101 (Psilocybin) in Healthy VolunteersCompletedNCT07050368Phase 1
• Mood Effects of Serotonin Agonists: DepressionCompletedNCT07017478Early Phase 1
• The Efficacy of a Smart Phone-based Test on Measuring Pupillary Light Reflex Alterations Following Cannabis Use Healthy in AdultsCompletedNCT06967051Not applicable
• A Phase 3 Trial of DT120 for Major Depressive Disorder (Emerge)Active, not recruitingNCT06941844Phase 3
• Acute Effects of MDMA Co-administration on the Response to Psilocybin in Healthy SubjectsCompletedNCT06884514Phase 1
• PsiloStudy: Psilocybin With Psychological Support (Psi-PS) for Military Veterans and First Responders With Co-occurring PTSD & Alcohol Use Disorder (AUD)Active, not recruitingNCT06853912Phase 2
• Dronabinol As an Adjunct for Reducing Pain (DARP)-Texas Children's HospitalWithdrawnNCT06834997Phase 2
• A Phase 3 Trial of MM120 for Generalized Anxiety Disorder (Panorama)Active, not recruitingNCT06809595Phase 3
• Effect of Psilocybin Only and Psilocybin Assisted Cognitive Behavioral Therapy in the Management of Major Depressive Disorder and Associated Metabolic, Immune, Inflammatory, Neuroplasticity and Electrical Activity MarkersCompletedNCT06746441Phase 2
• A Phase 3 Trial of DT120 for Generalized Anxiety Disorder (Voyage)Active, not recruitingNCT06741228Phase 3
• Psilocybin for Treatment-Resistant Depression in AutismActive, not recruitingNCT06731621Phase 1
• Effect of Psilocybin on the Positive Valence System in Treatment-resistant DepressionCompletedNCT06650800Not applicable
• Evaluation of the Effect of a Single Dose of Psilocybin on Neural Correlates of Cognitive Control in Patients With Psychogenic Nonepileptic SeizuresCompletedNCT06647056Not applicable
• A Second Psilocybin Group Therapy for the Treatment of Cancer-Related Anxiety in Partial Responders With Metastatic CancerCompletedNCT06644170Phase 1
• A Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Multiple Doses of MLS101 in Healthy ParticipantsCompletedNCT06643637Phase 1
• MDMA-Assisted Therapy for Pathological NarcissismActive, not recruitingNCT06565494Early Phase 1

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