Yes, Basil Leaves Have Antibacterial Properties. Basil leaves & seeds are more important herbs & helpful for many kind of disorders .Essential basil oil inculde its ability to treat nausea, motion sickness, indigestion, constipation,respiratory problem s, diabetes , etc. It is rich in vitamin A , minerals like magnesium, potassium , iron & calcium. Especially it is very good for blood circulation & improves metabolism.