Olive Leaf Extract is an herbal extract obtained from the specific parts of the olive tree and has the antibacterial or antiviral property. It has been traditionally used for variety of health problems. Extract of olive leaf can also be used for the common cold, ear infection, flu, eye infection, cold sores (herpes), infections of nose and throat and other problems caused by the small organisms like bacteria and viruses. One of the effects of extract of olive leaf extract is to boost the immune system by stimulating the phagocytes, a special type of White blood cells that has the ability to engulf the foreign harmful particle. Olive leaf extract is known for its many health benefits. It helps in maintaining the health of cardiovascular system, therefore, maintains the normal heart function. Olive leaf extract has a powerful antioxidant property that helps in scavenging the free radicals from the body. It also possesses a mild astringent property, and traditionally has been used to relieve fever.