Botanical name Oreganum vulgare/ Steam distilled, leaves and blossoms /W/ Turkey The antibacterial oil that everyone seems to want to try. A high Carvacrol level makes it helpful as an effective germ killer. Please note that this is undiluted pure essential oil of Oregano. This is NOT the diluted "oregano oil" in a base of vegetable oil found on sale in most health food stores. This is very concentrated and can be very potent. Said to be one of the most effective antiseptic aromatherapy oil for all kinds of infections. CAUTION Oregano Essential Oil is a very strong skin and mucous membrane irritant. If you plan to use it on the skin, please use a VERY mild dilution. Always dilute! Do not use during Pregnancy.