According to Wikipedia, chicory root extract is made by adding finely ground chicory root to water, and then filtering it. Chicory root extract is used medicinally for a variety of ailments.
WebMD explains that chicory root is a mild laxative that increases bile production when ingested. Although there is insufficient evidence regarding its effectiveness as of 2014, chicory root is sometimes used to treat conditions like loss of appetite, constipation, liver disorders and even cancer. It is additionally reported that chicory leaves are often cooked and eaten, and they are sometimes ground into a paste and used to reduce skin inflammation.
WebMD cautions to always consult a doctor before using chicory root extract medicinally.