Yes, Clove is good for diabetes patients. Clove has anti-diabetic effect. This is due to the presence of eugenol which lowers the blood glucose level. It also acts like insulin and inhibits the activity of certain enzymes (phosphoenolpyruvate carboxykinase (PEPCK) and glucose 6-phosphatase) which are known to produce glucose[2]. This in turn helps in reducing the level of glucose in the blood.