Cassia Essential Oil has antiseptic properties that are known to kill various types of bacteria and fungi. Cassia Essential Oil has been used as a tonic, carminative and stimulant for treating nausea, flatulence and diarrhea. Chinese and Japanese scientists have found that Cassia Essential Oil’s sedative effect lowers high blood pressure. It is a dermal irritant, dermal sensitizer and a mucus membrane irritant.