Clinical trials: Caffeine, completed
Alertness
Evaluating the Impact of Energy Drink Formulas on Alertness for an Extended Period
The primary purpose of the research is to evaluate in healthy adults the time course effects of energy drink formulas containing 120 mg caffeine with varying levels of taurine and b vitamins on subjective alertness in the…
- Trial name
- NCT07400614
- Testing
- All beverages are flavor and color matched, Flavored carbonated beverage, color-matched
- Where
- United Kingdom
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- PepsiCo Global R&D
COPD, ESRD
Randomized Evaluation of Default Access to Palliative Services
This is a large pragmatic, randomized controlled trial to test the real-world effectiveness of inpatient palliative care consultative services in improving a number of patient- and family-centered processes and outcomes of care…
- Conditions
- COPD, ESRD, Dementia
- Trial name
- REDAPS (NCT02505035)
- Testing
- Default ordering of palliative consult
- Where
- 11 sites in United States
- Volunteers
- 34,239 people
- Sponsor
- University of Pennsylvania
Placebo Effect, Drug Half Life
The Placebo Effect May Involve Modulating Drug Bioavailability
The total effect of a medication is the sum of its drug effect, placebo effect (meaning response of placebo), and their interaction.
- Conditions
- Placebo Effect, Drug Half Life, Pharmacokinetics
- Trial name
- NCT01501747
- Testing
- Caffeine, paracetamol, cephalexin, or ibuprofen
- Where
- Saudi Arabia
- Volunteers
- 162 people, healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
Asthma, Asthma Attack
Evaluating Asthma Exacerbation-induced Changes in Lung Function With a Home-based Spirometer
The investigators will study the use of a home-based spirometer (Spirobank Smart spirometer) that connects to a smartphone app (VitalFlo) in teenagers with persistent asthma to determine if clinically significant changes in lung…
- Conditions
- Asthma, Asthma Attack, Asthma, Allergic
- Trial name
- NCT03705325
- Testing
- Spirobank Smart spirometer
- Where
- 2 sites in United States
- Volunteers
- 44 people
- Sponsor
- VitalFlo Inc.
Drug-Drug Interaction, Healthy Volunteers
The Effects of Multiple Dose Fluoxetine and Metabolites on CYP1A2, CYP2C19, CYP2D6 and CYP3A4 Activity
Inhibitory drug-drug interactions (DDIs) are a considerable concern as inhibition of drug's clearance can lead to increased plasma concentrations and subsequent adverse events and toxicities.
- Trial name
- FLUOXETINE (NCT01361217)
- Testing
- Fluoxetine, Lovastatin, Omeprazole, caffeine, midazolam, dextromethorphan
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University of Washington
Healthy
Study to Evaluate the Effect of Multiple Doses of BIRT 2584 XX Tablets on the Pharmacokinetic Parameters of Warfarin, Omeprazole, Caffeine, and Dextromethorphan in Healthy Male Volunteers
The study aimed to investigate the effect of BIRT 2584 XX and its metabolite BI 610100 on the Pharmacokinetics (PK) of five probe substrates for cytochrome P450 isozymes.
- Trial name
- NCT02256813
- Testing
- BIRT 2584 XX, Warfarin sodium, Omeprazole
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Boehringer Ingelheim
Prostate Cancer, Prostate Adenocarcinoma
A Behavioral Health Intervention Using Digital Technology in Radiation Therapy for Prostate Cancer Patients
The purpose of this study is to determine how to incorporate a smart water bottle to improve bladder filling for prostate cancer patients undergoing radiation therapy.
- Conditions
- Prostate Cancer, Prostate Adenocarcinoma, Radiation Toxicity
- Trial name
- HIDRATEPRO (NCT04946214)
- Testing
- Smart Water Bottle
- Where
- United States
- Volunteers
- 18 people
- Sponsor
- University of Miami
Solid Tumors
Drug-drug Interaction Study of Tivantinib (ARQ 197) With Omeprazole, S-warfarin, Caffeine, Midazolam, and Digoxin in Cancer Subjects
The purpose of this study is to determine the effects of tivantinib on the pharmacokinetics of omeprazole, s-warfarin, caffein, midazolam, or digoxin in patients with cancer.
- Trial name
- NCT01517399
- Testing
- tivantinib, omeprazole, s-warfarin
- Where
- United States
- Volunteers
- 28 people
- Sponsor
- Daiichi Sankyo
Healthy Volunteers
Cocktail Approach for Cytochrome P450 and P-glycoprotein Activity Assessment Using Dried Blood Spot
Phenotyping is an approach largely used for the evaluation of the activity of cytochromes and transporters in vivo. It consists of the administration of probe substances metabolised by a specific cytochrome or transported by…
- Trial name
- NCT01731067
- Testing
- Cocktail probe drugs
- Where
- Switzerland
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Jules Desmeules
Healthy Volunteer
Determine the Effect of Multiple Doses of AZD7325, CYP Study
To determine the effects of repeated doses of AZD7325 on the pharmacokinetic profile of a CYP3A4 substrate (midazolam and its 1' hydroxy metabolite) and a CYP1A2 substrate (caffeine and its paraxanthine [3-desmethyl] metabolite).
- Trial name
- CYP (NCT00790114)
- Testing
- AZD7325, Midazolam, Caffeine
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- AstraZeneca
Hemodynamic Effects of Energy Drink, Electrocardiograph Effects of Energy Drinks
Evaluation of Energy Drink Consumption on ECG and Hemodynamic Parameters in Young Healthy Volunteers
This study is designed as a safety assessment to determine the cardiac and hemodynamic effects of overuse of energy drinks in healthy individuals through ECG, heart rate (HR) and blood pressure measurements.
- Trial name
- NCT02023723
- Testing
- Energy Drink, Active Control
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- David Grant U.S. Air Force Medical Center
Soreness, Muscle, Performance Enhancing Product Use
Acute Study on Muscle Soreness, Damage, and Performance
The acute study will evaluate pre- and post-exercise ingestion of a multi-ingredient supplement in a randomized, double-blind, placebo-controlled, crossover design.
- Conditions
- Soreness, Muscle, Performance Enhancing Product Use, Damage Muscle
- Trial name
- NCT04230226
- Testing
- Pre-workout plus and protein recovery plus
- Where
- United States
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Pharmanex
Apnea, Preterm Infants
High Versus Low Dose of Caffeine for Apnea of Prematurity
The optimum caffeine dose for apnea of prematurity has not been well investigated so the objective of the study is to compare high versus low dose of caffeine citrate to facilitate successful extubation in mechanically ventilated…
- Trial name
- NCT02103777
- Testing
- Caffeine citrate
- Where
- Egypt
- Volunteers
- 120 people
- Sponsor
- Mansoura University Children Hospital
Nutrition Processes
Effects of Nutraperf Consumption in Runners
Exercise has numerous health benefits. Nevertheless, when exercise duration is ~45 min or longer and intensity moderate to intense, it may induce different troubles, for example: hypoglycemia, peripheral and central fatigue…
- Trial name
- NCT00799630
- Testing
- Carbohydrate drink
- Where
- France
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Lescuyer Laboratory
Pulmonary Embolism, Deep Vein Thrombosis
Multi-Center Human Alert Trial to Prevent DVT and PE
To evaluate physician response to human alerts that inform the clinician that his/her patient may be eligible for thromboprophylaxis.
- Conditions
- Pulmonary Embolism, Deep Vein Thrombosis, Cancer, Surgery
- Trial name
- NCT00409136
- Testing
- Human Alert
- Where
- 26 sites in United States
- Volunteers
- 2,496 people
- Sponsor
- Brigham and Women's Hospital
Caffeine Use Disorder (DSM-5 Condition for Further Study)
Treatment for Caffeine Dependence
Recent research has shown that some individuals become addicted to or dependent on caffeine and are unable to quit or reduce caffeine consumption despite a persistent desire to do so.
- Trial name
- NCT01951872
- Testing
- Manual-based treatment for caffeine dependence
- Where
- United States
- Volunteers
- 82 people
- Sponsor
- Johns Hopkins University
Periorbital Area
A Clinical Trial to Evaluate the Effects of an Eye Serum on Improving the Appearance of the Periorbital Area
This study will evaluate the efficacy of the DIME Beauty Luminosity Eye Serum in improving the appearance of skin in the periorbital eye area. This study will last for 60 days.
- Trial name
- NCT06143033
- Testing
- DIME Beauty Luminosity Eye Serum
- Where
- United States
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- Dime Beauty Co.
Genetic Predisposition, Caffeine
Genetics in the Effect of Caffeine on Fat Oxidation
Genetic polymorphism on the effect of oral caffeine intake on fat oxidation during exercise has been studied in active and healthy population performing an incremental test on a cycle ergometer with 3-min stages at workloads from…
- Conditions
- Genetic Predisposition, Caffeine, Fat Burn
- Trial name
- NCT05975489
- Testing
- Acute caffeine supplementation
- Where
- Spain
- Volunteers
- 32 people
- Sponsor
- Universidad Francisco de Vitoria
Postoperative Ileus, Caffeine
Can Coffee/Caffeine Improve Post-Operative Gastrointestinal Recovery
Disruption of the normal gastrointestinal (GI) motility is a well-known consequence of major surgery. The pathophysiology behind this phenomenon is not fully understood but involves the autonomic nervous system as well as a…
- Trial name
- NCT04547868
- Testing
- Coffee, Decaffeinated Coffee, Warm water
- Where
- 3 sites in Canada
- Volunteers
- 174 people
- Sponsor
- Sunnybrook Health Sciences Centre
Caffeine
5 vs 10-Minute Chewing of Caffeinated Gum: Plasma Caffeine Pharmacokinetics
The goal of this study is to understand how chewing duration affects how quickly caffeine from caffeinated chewing gum appears in the blood and how long higher caffeine levels are maintained.
- Trial name
- NCT07386899
- Testing
- Caffeine 300 MG
- Where
- Turkey (Türkiye)
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Ege University