Cocoa Extract for Migraine Trial
CORAL
Cocoa Flavanols for Migraine: A Pilot Study
2 other identifiers
interventional
114
1 country
1
Brief Summary
The goal of this clinical trial is to assess the feasibility of recruitment and adherence to a high-dose cocoa extract supplement in individuals diagnosed with episodic migraine. The main questions it aims to answer are:
- Will we be able to enroll 114 participants during the recruitment period?
- Will participants take study pills daily during the pill-taking period? Researchers will compare two doses of cocoa extract to placebo to determine the acceptability of higher doses of cocoa extract supplementation in this patient population. Participants will be asked to:
- Provide two urine samples
- Complete daily questionnaires
- Take four study pills a day for 12 weeks
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Jun 2025
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
January 29, 2025
CompletedFirst Posted
Study publicly available on registry
February 5, 2025
CompletedStudy Start
First participant enrolled
June 23, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
December 1, 2026
ExpectedStudy Completion
Last participant's last visit for all outcomes
December 1, 2026
July 14, 2025
July 1, 2025
1.4 years
January 29, 2025
July 9, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (3)
Recruitment
We will be able to recruit and randomize 114 eligible individuals
15 months
Retention
Retention will be quantified by the proportion of subjects who record their migraines for at least 22 out of 28 days during run-in and the last four weeks of the intervention and complete all questionnaires at baseline and follow-up
From run-in to end of treatment at 12 weeks
Adherence
Adherence will be calculated as the proportion of participants who miss no more than 12 days of study pills (i.e. participants will consume study pills on 85% of the intervention days)
12 week intervention period
Secondary Outcomes (9)
Migraine days
Four week run-in period and final four weeks of the 12 week intervention period
Responder rate
Four week run-in period and final four weeks of the 12 week intervention period
Migraine severity
Four week run-in period and final four weeks of the 12 week intervention period
Adverse events
12 week intervention period
Reports of worsening of migraine symptoms
12 week intervention period
- +4 more secondary outcomes
Study Arms (3)
Placebo
PLACEBO COMPARATORParticipants assigned to this arm will take four placebo pills per day.
500 mg cocoa extract
EXPERIMENTALParticipants assigned to this arm will take two 250 mg cocoa extract pills per day and two placebo pills per day
1000 mg cocoa extract
EXPERIMENTALParticipants assigned to this arm will take four 250 mg cocoa extract pills per day
Interventions
Cocoa extract manufactured as 250 mg capsules
Eligibility Criteria
You may qualify if:
- Women and men aged ≥18 years
- Self-reported clinician diagnosis of migraine with or without aura which does not meet criteria for chronic migraine (according to the International Classification of Headache Disorders 3rd edition)
- Individuals with self-reported migraine will need to report a clinician diagnosis of migraine and be classified as having migraine or probable migraine by the American Migraine Study (AMS) migraine screener. The AMS migraine screener, which has a sensitivity of 100% and a specificity of 82% for the diagnosis of migraine will be used to confirm self-reported migraine status.
- History of migraine dating for at least one year
- Self-report of 4 to 14 migraine attacks during the 30 days prior to enrollment in the study
- Completion of at least 22 headache diary days during the 28 day run-in period
- o Report migraine frequency between 4 to 14 days during the 28 day run-in period
- If currently using medications to prevent or treat migraine, no new medication use within the past 3 months
- No new use of behavioral interventions within the past 3 months and/or agree to not begin new behavioral interventions during this trial
- Be willing to complete all study procedures and be randomized to all interventional groups
- Be fluent in English
- Own an iPhone or Android device and be willing to download MyCap to the device
You may not qualify if:
- Self-reported history of stroke or transient ischemic attack; history of brain surgery or spine surgery; currently receiving treatment for a concussion; and self-reported diagnosis of cluster headache, brain tumor, brain aneurysm, traumatic brain injury, multiple sclerosis, epilepsy, schizophrenia, or bipolar disorder
- Kidney failure or current dialysis treatment or any medical condition which the participant believes could lead to difficulty complying with the protocol
- Current alcohol or substance abuse (self-reported)
- Self-reported clinician diagnosis of medication overuse headache
- Currently or recently (past 6 months) received Botox treatment for migraine
- Failure to return the baseline urine sample
- Currently pregnant, nursing, or intending to become pregnant during the study period.
- Unwilling to forgo use of out-of-study supplements of cocoa extract during the trial
- Extreme sensitivity to caffeine
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Brigham and Women's Hospital
Boston, Massachusetts, 02115, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Pamela M Rist, ScD
Brigham and Women's Hospital
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Purpose
- OTHER
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Associate Epidemiologist
Study Record Dates
First Submitted
January 29, 2025
First Posted
February 5, 2025
Study Start
June 23, 2025
Primary Completion (Estimated)
December 1, 2026
Study Completion (Estimated)
December 1, 2026
Last Updated
July 14, 2025
Record last verified: 2025-07
Data Sharing
- IPD Sharing
- Will share
- Shared Documents
- ANALYTIC CODE
- Time Frame
- Data will be shared no later than time of the final publication of study results or the end of the performance period, whichever comes first. The duration of preservation and sharing of the data will be a minimum of 10 years after the end of the funding period.
- Access Criteria
- Data and supporting materials will be shared on the Harvard Dataverse. The data that is shared will be shared by unrestricted download.
Cleaned, item-level spreadsheet data for all variables will be shared openly, along with example quantifications and transformations from initial raw data