CompletedNot Applicable

Cocoa Flavanol Supplementation in Raynaud's Phenomenon

United Kingdom27 participantsStarted 2018-10-16

Plain-language summary

The study aims to investigate the effect that supplementing the diet with cocoa flavanols has on vasospasm symptoms and temperature regulation in women with primary Raynaud's phenomenon (PRP). Participants will be randomised to consume either high flavanol cocoa extract or low flavanol cocoa (placebo) daily for 3 months.

Who can participate

Age range

18 Years – 60 Years

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Experience symptoms of Primary Raynaud's Phenomenon, with \>1 attack / week through the winter months * Daily consumption of caffeine containing foods/drinks. * BMI \<27kg/m2 Exclusion Criteria: * pregnant or breast feeding (women only), * clinically significant metabolic or endocrine abnormalities * fasting glucose \>6.5mmol/l, * taking Bosentan, aspirin, dipyridamole, heparin or transdermal nitrates, * herbal supplement use, * food allergies related to the investigational product (cocoa, peanuts, milk), * sensitivity to methylxanthines (e.g. caffeine, theobromine). * Presence or history of digital ulceration, * blood parameters suggesting secondary Raynaud's, * history of migraines

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Vasospasm

Timeframe: 3 months

Trial details

NCT IDNCT03815162

SponsorUniversity of Nottingham

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2020-04-30

View on ClinicalTrials.gov More Primary Raynaud Phenomenon trials