2. Albizia Albizia bark is rich in vitamin C and some polysaccharide, so it has good anti-tumor effect. In clinical application, Albizia Albizia bark is often used to lower blood pressure, because it contains some oxytocin, which can cause a short-term drop in blood pressure. In addition, Albizia Albizia bark also has the effect of calming the nerves and relieving depression.