Olive leaf extract is a natural wide spectrum antibiotic. Medical research suggests that when olive leaf is taken orally, it dissolves the outer lining of the infectious organisms and penetrates the infected cells, thus inhibiting the replication of the bacteria.

In the early 1990s, numerous discoveries were made about the constituent of oleuropein in olive leaf. It was found that the body has two enzymes, esteraize and beta-glucosidase, which have the ability to convert oleuropein to elolenic acid, a powerful compound that kills a wide range of bacteria.
Many medical researchers are becoming increasingly concerned about the emergence of new strains of germs that have developed a resistance to synthetic antibiotics.
Olive leaf extract is increasingly used in Europe as a replacement for pharmaceutical drugs. In the USA, olive leaf extract is being used by a growing number of medical practitioners to combat bacteria and viruses.