- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02232269
Coffee Interaction With the Antihypertensive Drug Felodipine
Phase 1 Study of the Hemodynamic and Pharmacokinetic Interactions Between Coffee and Felodipine
Coffee is a globally popular beverage. More than half of the United States population spends an estimated $ 40 billion on the purchase of coffee each year. Personal consumption habits can vary. For example, the frequency of ingestion ranged from 59% for every day to 8% for less than one day per week consumption in one survey. In the case of occasional consumption, coffee can markedly elevate blood pressure in normotensive and hypertensive individuals. This pressor effect can occur with a caffeine dose of 200 - 250 mg, which can be found 2 - 3 cups of coffee. A major active constituent in coffee is caffeine, which is the most widely used pharmacological substance in the world.
Drug therapy plays a major role in the management of hypertension. However, the interaction between coffee or caffeine and blood pressure lowering drugs has been assessed in only three clinical studies that were reported more than three decades ago.
We conducted a comprehensive interaction study involving a commonly ingested amount of a particular Colombian coffee and felodipine in healthy middle-aged men and women. Peripheral (brachial) and central (aortic) hemodynamics and caffeine and felodipine pharmacokinetics were evaluated.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Phase 1
Contacts and Locations
Study Locations
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-
Ontario
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London, Ontario, Canada
- Victoria Clinical Trials Centre
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-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- healthy (normal physical exam, blood clinical chemistry)
- willingly signs ethics approved informed consent form
Exclusion Criteria:
- history of cardiac, renal, hepatic or gastrointestinal disease or substance abuse
- significant illness within 2 weeks of starting study
- history of allergy to felodipine , tablet ingredients or dihydropyridines
- routinely taking prescription or OTC drugs or natural health products
- received an investigational drug withing the previous 4 weeks
- females who are pregnant or breast-feeding
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Water plus Felodipine
Felodipine extended-release tablet ,10 mg, single dose, 8 hours
|
Other Names:
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Active Comparator: Black Coffee
Black Coffee, 300 ml, 0 and 1 hour
|
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Experimental: Black Coffee plus Felodipine
Black Coffee, 300 ml, 0 and 1 hour Felodipine extended-release tablet ,10 mg, single dose, 8 hours |
Other Names:
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Active Comparator: Grapefruit Juice plus Felodipine
Grapefruit Juice, 300 ml, 0 and 1 hour Felodipine extended-release tablet ,10 mg, single dose, 8 hours |
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The effect of felodipine on coffee-mediated increases in peripheral and central blood pressure .
Time Frame: Change from Baseline to 8 hours Post Dose
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Peripheral (brachial systolic and diastolic blood pressure) and central (aortic systolic blood pressure) measurements were the mean of at least 3 readings after 5 minutes of sitting at rest.
The respective instruments used were BpTRU™ Vital Signs Monitor (BpTRU Medical Devices, Coquitlam BC, Canada) and SphygmoCor® CP Pulse Wave Analysis System - Research (AtCor Medical, Inc., Itasca, IL USA).
|
Change from Baseline to 8 hours Post Dose
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The effect of coffee on the oral pharmacokinetics of felodipine.
Time Frame: Change from Baseline to 8 hours Post Dose
|
Area Under Curve (AUC) Time Frame: predose, 1,2,3,4,5,6,7,8 hours post-dose
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Change from Baseline to 8 hours Post Dose
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: David G Bailey, BScPhm, PhD, Lawson Health Research Institute
Publications and helpful links
General Publications
- Bailey DG, Dresser GK, Urquhart BL, Freeman DJ, Arnold JM. Coffee-Antihypertensive Drug Interaction: A Hemodynamic and Pharmacokinetic Study With Felodipine. Am J Hypertens. 2016 Dec 1;29(12):1386-1393. doi: 10.1093/ajh/hpw081.
- Dresser GK, Urquhart BL, Proniuk J, Tieu A, Freeman DJ, Arnold JM, Bailey DG. Coffee inhibition of CYP3A4 in vitro was not translated to a grapefruit-like pharmacokinetic interaction clinically. Pharmacol Res Perspect. 2017 Oct;5(5):e00346. doi: 10.1002/prp2.346.
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- R-11-655
- NA-7122 (Other Grant/Funding Number: Heart & Stroke Foundation of Ontario)
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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