Camphor essential oil is extracted from the chipped wood, root stumps and branches of the camphor tree, which is native to Taiwan, China and Japan. The tree must be at least 50 years old before it can produce oil. Camphor was used traditionally to cure the plague in ancient Persia. Camphor oil is very strong and should be used with care; when used in vapor therapy, it is useful for colds and other upper respiratory infections. It is not recommended for all-over massage but can be helpful for muscular and joint aches and pains as well as sprains. It is analgesic, anti-inflammatory and antiseptic.