The protection against illnesses can be found in the medical plants. The medical and aromatic plants for health contain active compound that can give good effects for human body. The essential substances such as coumarins, alkaloids and volatile oils can be found in the medical plants. Some of the important substances cannot be produced synthetically. These natural compounds can be used to prevent and cure the bad effects of some toxics and serious illnesses. Some plants can be used to penetrate the blood, digestion and respiration system. The herbal medicine can be derived from the leaves, seeds, flowers and even roots.