St. Francis Herb Farm's Oreganum Essence contains 0.99ml of certified organic oregano leaf. Modern research has shown that oregano is an antioxidant that is full of infection fighting and anti inflammatory compounds. By taking 40 drops 3 times a day of Oreganum Essence you can build a stronger immune system as well as treat and prevent the common cold, flu, sinus congestion, bronchitis and other upper respiratory conditions. Made into an easy to use and absorb tincture. Tinctures provide relief faster and are found to be more effective than traditional capsules.