Dietary SupplementExtra Virgin Olive Oil BaseOriganum Vulgare150 mg Per CapsuleWhole Aerial Lab VerifiedDiscussion: Native to the Mediterranean region, the oregano plant has been used in folk medicine and a spice for thousands of years. Oil of Oregano contains many volatile plant compounds that give it unique properties, including carvacrol, thymol, terpenes, rosmarinic acid, naringin and beta-caryophyllin. Oil of Oregano has traditionally been used to help support immune system response and to maintain healthy intestinal flora.