Quantum Oregano Oil is the essential oil of oregano, specifically Origanum vulgare which is the true, nonhybrid oregano species. Unbelievably, most oregano and oregano oils available in the U.S. are from non-oregano species, primarily marjoram or thyme, and they are actually falsely labeled!  These non-oregano species may not be harmful, but they do not have the potent healthful properties of true wild oregano.  The most active ingredient in wild oregano is carvacrol, a potent naturally occurring compound which has remarkable effects to support and promote the immune system.  It takes 100 pounds of oregano plants to make 1 pound of the essential oil of oregano.  This concentrated natural oil is very powerful.  Quantum Oregano Oil contains over 50 compounds which possess immune promoting actions, although carvacrol is the main one.  In addition, the oil of oregano has excellent antioxidant properties, notably labiatic and p-hydroxy-hydrocaffeic acid.*