Gentian root powder is obtained from great yellow gentian, a perennial herb indigenous to the alpine meadows of the mountainous ranges of central and southern Europe. Also known as bitterwort, the herb has a long history of use as a digestive. In fact, many herbal bitter formulas contain gentian root. The powdered form may be encapsulated as a dietary supplement or added to teas, tonics and herbal bitters formulas. .