| Recruiting | Effects of 8 Weeks of Turmeric Ingestion on Physiology and Wellbeing in Healthy Older Adults NCT07196514 | Nottingham Trent University | N/A |
| Recruiting | Effects of Low-intensity Transcranial Magnetic Stimulation on Major Depressive Disorder, and on 5-hydroxyindol NCT06667180 | Universidad de Guanajuato | Phase 1 / Phase 2 |
| Completed | Caffeinated Chewing Gum on Special Forces Performance NCT06638372 | National Taiwan Sport University | N/A |
| Completed | Nitrate Formulations and Exercise Performance NCT06531070 | University of Greenwich | N/A |
| Completed | Acute Effects of Beetroot Juice and Caffeine Co-ingestion on Lower-limb Strength and Muscular Endurance in Fem NCT06758323 | Jose Manuel Jurado Castro | N/A |
| Recruiting | Neural Mechanisms of Immersive Virtual Reality in Chronic Pain (VR TMD EEG) NCT06214923 | University of Maryland, Baltimore | N/A |
| Completed | Caffeine & Bodybuilding Dehydration Ability NCT06431035 | Chih-Hui Chiu | N/A |
| Completed | Caffeinated Chewing Gum on 400-meter Performance NCT06430996 | Chih-Hui Chiu | N/A |
| Completed | Caffeinate Chewing Gum on Ice Hockey Performance NCT06557655 | National Taiwan Sport University | N/A |
| Terminated | Naltrexone for Prolonged Grief Disorder NCT06140420 | Texas Tech University | Phase 4 |
| Unknown | Stimulating Brain Waves During Deep Sleep NCT05024578 | University of Ottawa | N/A |
| Recruiting | Suvorexant as an Adjunct to Buprenorphine in Persons Who Use Fentanyl NCT05145764 | Johns Hopkins University | Phase 2 |
| Completed | Neuromuscular Responses to Acute Beetroot Ingestion in Women Older Adults NCT05337527 | Universidad Francisco de Vitoria | N/A |
| Completed | Caffeine Ingestion to Counter the Exercise-mediated Fall in Glycaemia in Type 1 Diabetes NCT04671043 | Insel Gruppe AG, University Hospital Bern | N/A |
| Completed | Impact of Beetroot Juice Ingestion on Female Rugby Performance NCT05209126 | Universidad Francisco de Vitoria | N/A |
| Completed | Caffeine Supplementation Improves the Cognitive Abilities and Shooting Performance of Trained E-sports Players NCT05521347 | National Taiwan Sport University | N/A |
| Unknown | Placebo Effects Investigated by Different Experimental Designs NCT04317157 | University of Sao Paulo | N/A |
| Recruiting | Understanding How Opioids Affect the Experiential and Neural Signatures of Social Experiences NCT05007561 | San Diego State University | EARLY_Phase 1 |
| Completed | TetraSOD® Supplementation and Skeletal Muscle Redox Gene Expression NCT06822556 | Loughborough University | N/A |
| Completed | Neural Correlates of Hypoalgesia Driven by Observation NCT03897998 | University of Maryland, Baltimore | Phase 2 |
| Active Not Recruiting | Neural Mechanisms of Immersive Virtual Reality in Chronic Pain NCT04851301 | University of Maryland, Baltimore | Phase 1 / Phase 2 |
| Completed | Beetroot Juice Effects on Contractile or Neuromuscular Properties in Male Trained Sprinters NCT06675682 | Universidad Pontificia Comillas | N/A |
| Completed | Effects of Expectations on Negative Affect, Perceived Cognitive Effort, and Pain NCT05425563 | Trustees of Dartmouth College | N/A |
| Completed | Ingestion of Beta-alanine Effects in Well-trained Tennis Players NCT05427409 | Universidad Francisco de Vitoria | N/A |
| Completed | Combining Animal-assisted Intervention and Placebo-induced Analgesia NCT04361968 | University Hospital, Basel, Switzerland | N/A |
| Unknown | Assessment of Cost-effectiveness in Two Empirically-based Psychotherapies for Borderline Personality Disorder: NCT04309045 | Shalvata Mental Health Center | N/A |
| Completed | The Role of Stress Neuromodulators in Decision Making Under Risk and Selective Attention to Threat NCT04359147 | Charite University, Berlin, Germany | N/A |
| Completed | Acute Caffeine Ingestion on Futsal Performance NCT04852315 | Universidad Francisco de Vitoria | N/A |
| Completed | Delayed-release Bedtime Caffeine and Sleep Inertia Symptoms Immediately Upon Awakening NCT04975360 | University of Zurich | N/A |
| Completed | Pharmacological Modulation of Belief Salience NCT03754062 | King's College London | Phase 1 |
| Completed | Effects on CK, RPE, VAS Scale and Physical Performance of Three Recovery Methods in Elite Basketball Players NCT05805540 | University of Cadiz | N/A |
| Terminated | Pexacerfont for Stress-induced Food Craving NCT01656577 | National Institute on Drug Abuse (NIDA) | EARLY_Phase 1 |
| Completed | Neurophysiological Reserve With Caffeine Manipulation NCT01167478 | University of Sao Paulo | N/A |
| Completed | The Biology of Resilience NCT01011465 | Harvard School of Public Health (HSPH) | N/A |
| Completed | The Cognitive Enhancing Effects of D-Cycloserine Among Non-Demented Elderly NCT01361633 | Hartford Hospital | Phase 2 |
| Completed | Antiglutamate Anticonvulsants in the Treatment of Alcohol Withdrawal Syndrome NCT00241995 | St. Petersburg State Pavlov Medical University | N/A |