What is the difference between flavanols, flavonoids, and polyphenols?
They are nested categories, not synonyms: polyphenols is the largest family, flavonoids are one branch within it, and flavanols are a smaller subgroup of flavonoids. Cocoa flavanols, and one flavanol called (-)-epicatechin in particular, are the specific molecules that cocoa-and-circulation research keeps coming back to.
| Category | What it is | Common food sources | Example compounds |
|---|---|---|---|
| Polyphenols | The broadest family of plant compounds, thousands in total | Cocoa, tea, coffee, berries, olive oil | Flavonoids, phenolic acids, stilbenes |
| Flavonoids | One large class inside polyphenols, grouped by structure | Cocoa, citrus, onions, apples, tea | Flavanols, flavonols, anthocyanins |
| Flavanols | A smaller subgroup of flavonoids (also called flavan-3-ols) | Cocoa, green tea, grapes, apples | (-)-epicatechin, catechin, procyanidins |
| (-)-epicatechin | A single cocoa flavanol most studied for blood flow | Non-alkalized cocoa, green tea | (-)-epicatechin itself |
Polyphenols, flavonoids, flavanols: three rings, not three rivals
Picture three circles nested inside one another. Polyphenols are the outermost circle, a huge family of plant compounds that includes the phenolic acids in coffee and stilbenes like resveratrol in grapes. Flavonoids sit inside that circle, sharing a common chemical backbone, and they split into subgroups like anthocyanins (the pigments in blueberries) and flavonols (found in onions and kale). Flavanols, sometimes written flavan-3-ols, are one of those subgroups. So every flavanol is a flavonoid, and every flavonoid is a polyphenol, but the reverse is not true. When a label brags about total polyphenols, it may still contain very few of the specific cocoa flavanols that circulation research actually measured.
Why flavanols get singled out for blood flow
Within the flavanol subgroup, one molecule does most of the work in cardiovascular research: (-)-epicatechin. Cocoa flavanols and epicatechin are studied for their role in supporting the body's nitric oxide pathway, which helps maintain healthy endothelial function and normal, flexible blood flow. The European Food Safety Authority recognizes that 200mg of cocoa flavanols daily helps maintain normal blood-flow-dependent vasodilation. That is a structure-and-function role, about keeping a healthy system working normally, not treating anything. The takeaway is precision. "More polyphenols" is a vague promise, while "more cocoa flavanols and epicatechin" points to the exact compounds the science was built around.
From category to serving: what actually reaches your cup
This is where cocoa gets tricky. A dark bar can list an impressive cacao percentage while delivering anywhere from roughly 90 to 800mg of flavanols per 100g, and it almost never tells you which. Cacao percent measures cocoa mass, not flavanol content. Alkalizing (Dutching) cocoa for a smoother taste can also strip out most of its flavanols, dropping natural levels from around 34.6mg/g to as little as 3.9mg/g. That is why format and processing matter more than any single percentage. CCV-3 uses non-alkalized cocoa in a zero-sugar, 27-calorie drink mix delivering roughly 1,200mg cocoa flavanols and about 600mg (-)-epicatechin per scoop, 2.2x more flavanols and polyphenols than the amount used in the research, versus about 80 to 135mg of epicatechin in a typical cocoa flavanol capsule serving. Meet CCV-3 -> /products/harmonymd-pure-cocoa-flavanols-flavonoids
Are flavanols and flavonoids the same thing?
No. Flavanols are a specific subgroup within the larger flavonoid family. All flavanols are flavonoids, but flavonoids also include other subgroups like anthocyanins and flavonols. Cocoa flavanols, especially (-)-epicatechin, are the ones most studied for circulation.
Do polyphenols and flavanols mean the same thing on a label?
Not at all. Polyphenols is the broadest category, covering thousands of compounds. A product high in total polyphenols may contain very few of the specific cocoa flavanols that circulation research measured, so the more precise the term, the more it actually tells you.
Which flavanol matters most for blood flow?
(-)-epicatechin is the cocoa flavanol most closely tied to supporting the nitric oxide pathway and healthy endothelial function. CCV-3 delivers roughly 600mg per scoop, compared with about 80 to 135mg in a typical cocoa flavanol capsule serving.
Does a high cacao percentage mean more flavanols?
No. Cacao percent measures cocoa mass, not flavanol content, and dark bars are almost never labeled for flavanols. Alkalizing (Dutching) can also strip out most of them, which is why processing and format matter more than the percentage.
Precision over percentages
If you want cocoa flavanols and epicatechin at a level built around the research rather than a vague polyphenol claim, CCV-3 delivers them in a zero-sugar, five-ingredient daily cup. See the label, the numbers, and the format.
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