NCT06808230

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

77
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
114

participants targeted

Target at P50-P75 for not_applicable

Timeline
7mo left

Started Jun 2025

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Progress61%
Jun 2025Dec 2026

First Submitted

Initial submission to the registry

January 29, 2025

Completed
7 days until next milestone

First Posted

Study publicly available on registry

February 5, 2025

Completed
5 months until next milestone

Study Start

First participant enrolled

June 23, 2025

Completed
1.4 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 1, 2026

Expected
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 1, 2026

Last Updated

July 14, 2025

Status Verified

July 1, 2025

Enrollment Period

1.4 years

First QC Date

January 29, 2025

Last Update Submit

July 9, 2025

Conditions

Keywords

migrainecocoa extractcocoa flavanol

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 COMPARATOR

Participants assigned to this arm will take four placebo pills per day.

Dietary Supplement: Cocoa extract placebo

500 mg cocoa extract

EXPERIMENTAL

Participants assigned to this arm will take two 250 mg cocoa extract pills per day and two placebo pills per day

Dietary Supplement: Cocoa extract

1000 mg cocoa extract

EXPERIMENTAL

Participants assigned to this arm will take four 250 mg cocoa extract pills per day

Dietary Supplement: Cocoa extract

Interventions

Cocoa extractDIETARY_SUPPLEMENT

Cocoa extract manufactured as 250 mg capsules

1000 mg cocoa extract500 mg cocoa extract
Cocoa extract placeboDIETARY_SUPPLEMENT

Cocoa extract placebo

Placebo

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

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

RECRUITING

MeSH Terms

Conditions

Migraine Disorders

Interventions

Chocolate

Condition Hierarchy (Ancestors)

Headache Disorders, PrimaryHeadache DisordersBrain DiseasesCentral Nervous System DiseasesNervous System Diseases

Intervention Hierarchy (Ancestors)

FoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Study Officials

  • Pamela M Rist, ScD

    Brigham and Women's Hospital

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Pamela M Rist, ScD

CONTACT

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

Cleaned, item-level spreadsheet data for all variables will be shared openly, along with example quantifications and transformations from initial raw data

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.

Locations