Cocoa flavanols

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The short answer

Standardized flavanol-rich products can modestly affect endothelial function and blood pressure.

Evidence and scope: Conditional or population-specific
This status does not grade the ingredient for every goal, outcome, or person.
Important limitation: Benefit depends on the population, formulation, baseline status, and objective; results should not be generalized.
Before deciding: Key concern: Caffeine/theobromine, migraine, reflux, anticoagulants, kidney stones, and heavy metals require review.

01 / PRACTICAL GUIDE

Dose, absorption, and combinations

These are indication-specific reference or studied ranges—not a personalized prescription. Start with the objective, then check the form, label, medicines, and health conditions.

Reference range by objective

Blood pressureAbout 200–600 mg/day cocoa flavanols in many trials

Reference or studied range—not a personalized prescription. The product label or a clinician may specify a different dose.

Dose source ↗

More is not automatically better. A clinician or product label may specify a different amount.

Absorption / solubilityFormulation-dependent

Not usefully classified as a fat- or water-soluble vitamin; absorption depends on the salt, extract, delivery system, and meal.

How it is commonly taken

Choose a quantified low-sugar product.

Do not combine casually

Caffeine/theobromine, migraine, reflux, anticoagulants, kidney stones, and heavy metals require review.

Dose and use source ↗

Dose and use links lead to primary or official source material. Search links are discovery tools, not proof that every returned paper applies.

02 / EVIDENCE

What the research says

We keep supportive, mixed, negative, safety, and contextual findings together. The headline never replaces the underlying papers.

1research papers in this ledger

1unique primary studies represented

21,442unique participants represented

These are audited counts for this JIVANA collection, not search-result totals. Participants are counted once when multiple papers use the same cohort; review papers are not added again to participant totals.

Open the research timelineResearch timeline

Entries are ordered by publication year. A study period appears only when the source reports it.

2022

Mixed or qualifiedPMID 35294962 · NCT02422745

Cocoa flavanols and cardiovascular events in COSMOS

The prespecified primary outcome was not significantly reduced (HR 0.90, 95% CI 0.78–1.02). A secondary cardiovascular-death result favored cocoa, while myocardial infarction, stroke, revascularization, and all-cause mortality were not significantly reduced; that secondary signal needs confirmation and does not establish routine prevention benefit.

Published: 2022Duration: Median 3.6 yearsn=21,442 participants

Study design and methods

Design: Randomized, double-blind, placebo-controlled 2×2 factorial trial
Population: 21,442 US adults: women aged 65 years or older and men aged 60 years or older, without major cardiovascular disease or recently diagnosed cancer
Intervention: Cocoa extract providing 500 mg flavanols daily, including 80 mg epicatechin, versus placebo
Outcome: Total cardiovascular events, cardiovascular death, myocardial infarction, stroke, revascularization, and all-cause mortality

Funding or conflict note: The intervention used a standardized trial extract; results should not be generalized to chocolate foods or unspecified retail products.

Open research record ↗

Unscreened discovery appendix—not evidence30 candidate publicationsSearch run: Aug 21, 2026

Complete for the displayed PubMed query at the search timestamp—not for all databases or every possible synonym. Candidates can be irrelevant, duplicate the same study, or report negative findings. They are never summed as evidence or participants until screened.

03 / SOURCES

Start with the source material

Official evidence overviewPubMed bounded human-evidence search Live PubMed discovery searchNational Library of Medicine

The live search is for discovery only. Search-result counts change and are not included in the audited totals above.

Recent PubMed discovery recordsDirect links to the first 12 records returned by the reproducible search. These are discovery candidates—not reviewed summaries or a count of supportive findings.

04 / EXPERT CONTEXT

Expert context—not evidence

Expert positions are dated context—not scientific evidence. They never raise the evidence status or become consensus by repetition.

No direct, source-verified endorsement is currently recorded. Research authorship or discussion alone is not treated as endorsement.