It is a root native to Asia and far most found around the globe. It is one of the most known spices, due to its culinary and medicinal use. Powerful external analgesic and anti-inflammatory, it is very useful for joint pain (lumbago, sciatic, rheumatism, etc.) Chinese traditional medicine says that it is especially effective when there are symptoms of cold in that areas (paleness, low temperature, etc) It is also very effective for arthritic and rheumatic pains, furthermore it usually improves the mobility of the treated area and decreases pain.