Epi-Plex's powerful results are because of epicatechin, which is a flavonol found in cacao. It's been gaining popularity in the bodybuilding world due to it helping inhibit myostatin in the body. Why is this so important Because myostatin is what is found in your skeletal muscle that inhibits you from building too much muscle. Well that's where Epi-Plex comes in. It helps inhibit the production of this myostatin so you can build more muscle than ever before. .