Compounds in Boswellia extract have been shown to bind directly to 5-LOX, an enzyme that transforms fatty acids into inflammatory factors like leukotriene B4. A compound in boswellia called AKBA is the key to this beneficial action. Each 100 mg vegetarian capsule of 5-LOX Inhibitor with ApresFlex® is standardized to provide 20% of active AKBA from boswellia.