A.K.B.A. (Acetyl-11-keto-β-boswellic acid) is extracted from Boswellia tree and is standardized to a level in Rhuval Oil where it is highly effective. Research shows that A.K.B.A. can prevent the formation of leukotrienes in the body. Leukotrienes are molecules that have been identified as a cause of inflammation. A.K.B.A. is documented to inhibit inflammation, specifically benefitting people suffering from pain and stiffness of the knee joints.