Clinical trials: Caffeine
The Focus of the Study is Healthy Volunteers
Understanding the Effects of Daily Tea Consumption on Attention, Sleep, and Mood, in Healthy Adults
The goal of these series of N-of-1 trials is to compare the effects of three tea interventions on cognition, mood, and sleep, in healthy adult participants.
- Trial name
- Reactivi-Tea (NCT06224569)
- Testing
- Black tea flavoured, tea drink, Black tea flavoured, caffeine-only drink, Green tea flavoured, tea drink
- Where
- United Kingdom
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Aberdeen
ITCH, Pruritus
Reducing Itch With Hypnosis and Virtual Reality
Chronic itch is a disabling condition with currently limited treatment options. Virtual reality (VR) is a relatively new approach that provides immersion in another environment and has been shown to have a temporary itch…
- Trial name
- VRITCH (NCT06787794)
- Testing
- Virtual Reality-assisted hypnosis
- Where
- Netherlands
- Volunteers
- 30 people
- Sponsor
- Universiteit Leiden
Cytochrome P450 Phenotype and Genotype Metrics
Development of Cocktail for Measuring the Activity of Important Cytochrome P450 Enzymes
The Cytochrome P450 enzymes are responsible for the metabolism of a wide range of drugs and other xenobiotics. Genetic variants of the encoding P450 genes have shown to influence the rate of metabolism of many clinically used…
- Trial name
- NCT00981929
- Testing
- Tramadol, Omeprazole, losartan, caffeine, Tramadol, omeprazole, losartan, caffeine
- Where
- Denmark
- Volunteers
- 412 people, healthy volunteers welcome
- Sponsor
- University of Southern Denmark
Hypoxia
Effects of Caffeine on Intermittent Hypoxia in Infants Born Preterm
The purpose of this pilot study is to document the extent to which intermittent hypoxia persists beyond the age of discontinuing clinical methylxanthine, and will assess the effect of caffeine treatment on the number of…
- Trial name
- NCT01875159
- Testing
- Caffeine citrate 6 mg/kg/day
- Where
- United States
- Volunteers
- 98 people
- Sponsor
- American SIDS Institute
Drug Interaction
KF2022#4-trial: Effects of a Beta Blocker and NSAID on CYP Mediated Drug Metabolism
Carvedilol is a non-selective beta-blocker in common clinical use, used to treat hypertension, heart failure, and angina pectoris symptoms associated with coronary artery disease.
- Trial name
- KF2022#4 (NCT06566794)
- Testing
- Caffeine Tablet, Bupropion Hydrochloride Capsels, Repaglinide Capsels
- Where
- Finland
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Helsinki University Central Hospital
Postoperative Dental Pain
A Study to Learn How Well a Single Dose of the Study Treatment Naproxen Sodium and Caffeine Combined in One Tablet (Fixed-dose Combination) Works to Relieve Pain After Dental Surgeries Compared to the Single Ingredients and to Placebo
Researchers are looking for a better way to relieve pain in people, such as after dental surgery. Participants in this study, have had 3 or 4 third molars (cheek teeth) removed and subsequently have moderate to severe tooth pain.
- Trial name
- NCT05485805
- Testing
- Naproxen sodium and caffeine (BAY2880376), Naproxen sodium (Aleve), Caffeine
- Where
- United States
- Volunteers
- 541 people, healthy volunteers welcome
- Sponsor
- Bayer
Healthy
Effects of Tipranavir (With Ritonavir) Capsule and Liquid Formulation on Cytochrome P450 and P-glycoprotein Activity in Healthy Volunteers
Primary: To quantify the influence of single-dose and steady-state tipranavir/ritonavir 500/200 mg on intestinal and hepatic cytochrome P450 (CYP) and P-glycoprotein (P-gp) biomarkers, as a means of predicting drug interactions.
- Trial name
- NCT02243553
- Testing
- Tipranavir capsule, Tipranavir solution, Ritonavir capsule
- Volunteers
- 34 people, healthy volunteers welcome
- Sponsor
- Boehringer Ingelheim
Cardiac Arrest (CA), Sudden Death, Cardiac
Automated Cardiac Arrest Detection and Alerting in Daily Life
Surviving a cardiac arrest that happens outside the hospital depends on quickly recognizing the event and immediately starting CPR.
- Trial name
- DETECT-4b (NCT06692374)
- Where
- Netherlands
- Volunteers
- 200 people
- Sponsor
- Radboud University Medical Center
Premature Infant Disease, Apnea of Prematurity
Caffeine Citrate in Preterm Infants at Risk of Apnea in Zambia
The goal of this clinical trial is to learn if caffeine citrate prevents apneic events that result in sick visits in moderately preterm infants after discharge from the hospital.
- Conditions
- Premature Infant Disease, Apnea of Prematurity, Development, Infant
- Trial name
- NCT06518603
- Testing
- Caffeine citrate 20mg/kg/day
- Where
- Zambia
- Volunteers
- 340 people
- Sponsor
- University of Alabama at Birmingham
Pain, Postoperative
Caffeine and Neurologic Recovery Following Surgery and General Anesthesia
The ongoing opioid epidemic is a public health crisis, and surgical patients are particularly vulnerable to opioid-dependency and related risks. Emerging data suggest that caffeine may reduce pain after surgery.
- Trial name
- NCT03577730
- Testing
- Caffeine Citrate, Dextrose Water
- Where
- United States
- Volunteers
- 71 people
- Sponsor
- University of Michigan
Cancer- and Cancer Treatment-Related Conditions, Stroke
Studies on the Impact of Taste-aware Intelligent Analysis of Oral Nutritional Supplements
The goal of this observational study is to test the taste perception threshold and palatability interval of different populations and the difference in taste perception between tumor and stroke patients and healthy people by…
- Trial name
- NCT05651321
- Testing
- Samples materials of basic taste stimuli and enteral nutrition preparations
- Where
- China
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Peking Union Medical College Hospital
Healthy Subjects
The Effects of Coffee
In this study, participants will be eligible to participate in a paid research study that will examine the effects of regular coffee drinking. The study takes approximately 2 hours total, 55 min. on 2 separate days.
- Trial name
- NCT00336271
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- American University
Acute Coronary Syndrome
IDE-ALERTS Continued Access Study
This Continued Access IDE Study includes a subset of former ALERTS trial (NCT00781118) patients and provides performance data for a refined Guardian implantable medical device (AMSG3-E) with a new battery designed to extend…
- Trial name
- ALERTS-CAS (NCT04316481)
- Testing
- AngelMed Guardian System
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Angel Medical Systems
Maximum Force, Strength Endurance
The Effects of Caffeine and Vitamin C on Maximum Strength and Strength Endurance in Adolescents With Mild Mental Fatigue
Objective To investigate the independent and combined effects of caffeine and vitamin C on maximal strength and strength endurance in female adolescents with mild mental fatigue.
- Conditions
- Maximum Force, Strength Endurance, Mental Fatigue
- Trial name
- NCT07726745
- Testing
- 1RM squats and bench presses; repetitions at 65% of 1RM for squats and bench presses
- Volunteers
- 40 people
- Sponsor
- Yunliang Zhang
Supplementation, Sports Nutrition
Caffeine Kinetics and CrossFit®-Specific Performance
The study aims at assessing the relation between caffeine (CAF) and paraxanthine (PAX) kinetics after acute ingestion of caffeine (3 mg/kg body mass) in the form or mono- or multi-ingredient preparations and CrossFit®-specific…
- Conditions
- Supplementation, Sports Nutrition, Ergogenic Support, Discipline-specific Performance
- Trial name
- NCT05516212
- Testing
- CAFMONO supplementation, CAFMIPS_1 supplementation, CAFMIPS_2 supplementation
- Where
- Poland
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Poznan University of Physical Education
Skill Performance, Soccer Performance
Influence of Coffeeberry Ingestion on Soccer Skill Performance
The study of soccer skill performance has 3 objectives. Objective 1 is to compare effects of coffeeberry (300mg) and placebo ingestion on dribbling speed and precision and passing and shooting speed and accuracy compared to…
- Conditions
- Skill Performance, Soccer Performance, Coffeeberry Effects
- Trial name
- NCT04181619
- Testing
- Coffeeberry beverage, Comparator beverage
- Where
- United Kingdom
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- PepsiCo Global R&D
Polycythemia Vera
Hepcidin Mimetic in Patients With Polycythemia Vera (REVIVE)
This is a Phase 2 study with an open-label dose escalation phase followed by a blinded withdrawal phase and an open label extension.
- Trial name
- NCT04057040
- Testing
- PTG-300
- Where
- 16 sites in United States, India
- Volunteers
- 70 people
- Sponsor
- Protagonist Therapeutics, Inc.
Coffee, Anthocyanins
Short-term Effects of Caffeine and a Multi-ingredient Pre-workout on Exercise Performance
The investigators are conducting a study to see how a commercial pre-workout supplement, coffee, and water affect how well people perform. The study is conducted across four visits.
- Conditions
- Coffee, Anthocyanins, Exercise Performance
- Trial name
- NCT07024940
- Testing
- Ethiopian Coffee, Supplement
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- St. Louis University
Colitis, Ulcerative, Crohn Disease
Phase 4, Vedolizumab-4002 Post-marketing, Disease-Drug-Drug Interaction Study
The purpose of this study is to evaluate in a step-wise approach the disease drug-drug interaction (DDI) potential for vedolizumab to indirectly affect the exposure of cytochrome P-450 (CYP) substrate drugs by modulating…
- Trial name
- NCT02760615
- Testing
- Caffeine, Losartan, Omeprazole
- Where
- 2 sites in United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- Takeda
Sports Performance
Effects of L-Tyrosine and Caffeine on Performance in Elite Boxers
Participants will complete six sessions, including one familiarization and baseline session followed by five experimental conditions: control (no supplementation), placebo, L-tyrosine, caffeine, and combined L-tyrosine plus…
- Trial name
- TYCAF-BOX (NCT07530185)
- Testing
- L-Tyrosine, Caffeine, L-tyrosine + Caffeine
- Where
- Turkey (Türkiye)
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Inonu University
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