Olive leaves are bitter and astringent. As a bitter they stimulate bile flow and support the liver and digestion. Olive leaf extract helps lower blood sugar. Olive leaf tea is a traditional remedy in Europe to lower blood pressure.
Olive leaves are anti-microbial, anti-viral, anti-inflammatory, and antiseptic. This makes them useful to fight infection, and other feverish conditions, and to stave off a cold or the flu. It is listed as an anti-influenza herb and supplement. It protects the lungs from damage and is useful both in preventing viruses from replicating and in protecting the lungs during a virus that you can’t seem to shake.
***Insulin dependent diabetics therefore should use caution if supplementing with olive leaf.