What is (-)-epicatechin and what does it do in the body?

(-)-Epicatechin is the cocoa flavanol most closely tied to circulation research, and the amount per serving is what actually separates a real dose from a rounding error. It works by supporting your body's own nitric oxide production, which helps keep the lining of your blood vessels flexible and healthy.

What (-)-epicatechin actually is

(-)-Epicatechin is a flavanol, a plant compound found in cocoa, and it is the specific molecule researchers point to when they study the effects of cocoa flavanols. The parentheses and minus sign are chemistry shorthand for its exact three-dimensional shape, which matters because the body responds to that precise form. It sits alongside other flavanols in the cocoa bean, but epicatechin is the one that shows up most consistently in the science. The catch is that the amount in any given food is not on the label. Cacao percentage tells you how much cocoa solids a bar contains, not how much epicatechin survived processing, which is why two 85% bars can differ by an order of magnitude.

What it does in the body

Described in structure-and-function terms, the model is simple. Cocoa flavanols like epicatechin support your body's production of nitric oxide, a signaling molecule that helps blood vessels relax and stay flexible. That supports healthy endothelial function and normal, healthy blood flow. It is the same pathway EFSA references when it notes that 200 mg of cocoa flavanols a day helps maintain normal blood-flow-dependent vasodilation. This is a maintenance-of-normal-function story, not a treatment story. Epicatechin does not fix or cure anything. It supports a system your body already runs, using an input that cocoa happens to be unusually rich in when processing has not stripped it away.

How much epicatechin you actually get

This is where format and dose separate the useful from the theoretical. The COSMOS trial (Am J Clin Nutr, 2022, roughly 21,000 adults) used a concentrated cocoa extract delivering about 500 mg of flavanols including around 80 mg of epicatechin per day, as a capsule, not chocolate. CocoaVia lands near that same 80-135 mg range. A dark chocolate bar is unlabeled, wildly variable, and comes with sugar. CCV-3 puts a meaningful, honest amount into a format you actually enjoy: about 600 mg (-)-epicatechin and 1,200 mg cocoa flavanols per scoop, which is 2.2x more flavanols and polyphenols than the amount used in the research, at zero grams of sugar and about 27 calories. All the upside of dark chocolate, none of the junk. Meet CCV-3 -> /products/harmonymd-pure-cocoa-flavanols-flavonoids

Is (-)-epicatechin the same as a flavonoid?

Roughly, yes. Epicatechin is a flavanol, one subclass within the larger flavonoid family of plant compounds. When cocoa is described as rich in flavonoids or polyphenols, epicatechin is one of the specific molecules doing the work.

How much (-)-epicatechin is in dark chocolate?

It varies widely and is almost never listed. Cacao percentage does not equal flavanol content, and alkalizing (Dutching) can destroy the large majority of the flavanols, so two similar-looking bars can differ enormously.

How much (-)-epicatechin does CCV-3 have?

About 600 mg of (-)-epicatechin and roughly 1,200 mg of cocoa flavanols per scoop, at zero grams of sugar and about 27 calories, from five real ingredients and non-alkalized cocoa.

What does epicatechin do for blood flow?

Cocoa flavanols like epicatechin support your body's nitric oxide production, which helps blood vessels relax and supports healthy endothelial function and normal blood flow. It supports a normal process rather than treating a condition.