Boswellic acid is a series of pen acyclic triterpene molecules which are produced by plants in the genus Boswellia. Like many other terpenes, boswellic acids appear in the resin of the plant which exudes them; it is estimated that they make up 30% of the resin of Boswellia serrata. The boswellic acids are organic acids, consisting of a pentacyclic triterpene, a carboxyl group and at least one other functional group.