For centuries, drinking olive leaf tea has been a way, by Middle Eastern cultures, to treat coughs, sore throat, cystitis, fever, and gout. Poultices were also made from the olive leaves to treat boils, rashes, warts, and other skin disorders. Essential Olive Leaf , a pharmaceutical grade olive leaf extract, contains the highest concentration (15%) of oleuropein available, the active ingredient in olive leaves. It also contains the bioflavonoids rutin, luteolin, and hesperidin.
Olive leaf extract has been found to be helpful in containing viral infection and the spreading of these viruses by inactivating them. It also has the ability to directly penetrate infected cells to stop viral replication. Some research suggests that olive leaf extract may be a "true anti-viral" compound, as it appears to selectively block an entire virus-specific system.
Olive leaf extract provides natural protection and a healthy environment for cells without suppressing the immune system or harming beneficial microflora. It has been useful in fighting influenza, the common cold, Epstein-Barr Virus (EBV), and other viral infections. It can also boost energy levels and help with allergies.
Olive leaf extract is non-toxic, but when killing too many pathogens all at once, a "die off", or Herxheimer's reaction may occur. What could come across as flu-like symptoms, or allergic attacks, only happen with high doses, and usually pass quickly.