COCOA-PAD II Trial for Peripheral Artery Disease

This study is looking at whether cocoa flavanols can help people aged 55 and older with Peripheral Artery Disease (PAD). PAD is a condition where narrowed arteries reduce blood flow to your limbs. Participants will take two capsules daily of either cocoa flavanols (about 500 mg) or a placebo (an inactive capsule that looks the same) for six months. The main goal is to see if those taking cocoa flavanols can walk further in six minutes compared to those taking the placebo. We are looking for 190 participants, and the current status of the study is unclear.

Study design
This is an interventional study that will randomly assign 190 participants with PAD to one of two groups: cocoa flavanols or placebo.
What's involved
Participants will take two capsules daily for six months. The primary measurement will be a six-minute walk test at the beginning and end of the study.
Compensation
Not stated in the trial record.
Follow-up
Participants will be followed for six months, with the primary outcome measured at the six-month mark.

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NCT04794530

The COCOA-PAD II Trial

Recruiting
PHASE3Ages 55+InterventionalTreatment
Northwestern University
~190 participants
Updated 2026-05-28 on ClinicalTrials.gov
What's tested:cocoa flavanolsplacebo

At a glance

Recruiting sites
3 of 3 listed sites are recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Six-month change in six-minute walk distance
Measured over Baseline to six-month follow-up
Peripheral Artery Disease
3 sites across 2 states
Illinois2
Minnesota1
  • Mary McDermott, MD · PRINCIPAL_INVESTIGATOR · Northwestern University

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  • Six-month change in six-minute walk distanceBaseline to six-month follow-up

    Change in six-minute walk distance at six-month follow-up will be compared between those randomized to cocoa flavanols vs. those randomized to placebo.