Medicinal plants have been used for as long as we are aware, at least since the beginning of recorded history. There is evidence that medicinal plants can help against illnesses. Many pharmaceutical drugs have been developed following the results observed from the use of a range of medicinal plants.
The progression of the pharmaceutical industry led to the development of more lab-based drugs, but an evolution of awareness of herbal medicine is staging a comeback. The World Health Organization reports 110 of 133 nations surveyed are currently using plant material to provide for health care needs.