Oregano is a fragrant herb that's best known as an ingredient in Italian food. However, it can also be concentrated into an essential oil that's loaded with antioxidants and powerful compounds that have proven health benefits. Oregano oil is relatively cheap and readily available as a liquid or in capsule form. It is higher in antioxidants than most fruits and vegetables, and is packed full of powerful compounds called phenols.Oregano oil may be effective...