In a 14 week clinical trial , oral administration of O. europaea leaf extract (500mg/d) has improved glucose homeostasis in type II diabetic patients (Wainsteinetal.,2012). To evaluate the antihyperglycemic effects of A. vera, leaf gel (300mg twice daily for 2 months) was administered to type II diabetic patients. Results indicated that A. vera significantly reduced fasting blood sugar, HbA1c, total cholesterol and LDL levels (Huseini etal.,2012).