Oregano Oil is known as one natures most powerful anti-fungal and anti-viral herbs. Its natural anti-septic properties make it excellent for killing off parasites and maintaining a healthy immune system. California Naturals Oregano Oil contains 60% to 75% carvacrol which is the main active ingredient. 100% Vegeterian Internally 1-4 drops 2 to 3 times daily. May be diluted in water. Externally apply liberally as needed. Shake well before using. Keep out of reach of children. Not intended for use by pregnant or nursing women. A normal tingling sensation may be noticed when applied externally. Product capacity: 1 Oz. Each unit containing a (bottle / box): 1.