High blood glucose is directly related to diabetes and this disease is also known as Hyperglycemia. In other words when the glucose level in the blood rises above normal the situation is known as Hyperglycemia. This condition is classified in two conditions Fasting Hyperglycemia and Postprandial. In the former the glucose level in the blood is 90-130 mg/dL (milligrams per deciliter) and in the latter condition the glucose level in the blood is 180 mg/dL. Both the conditions need prompt treatment; otherwise it may lead to diabetes which can only be controlled and not eradicated. In other words hyperglycemic hyperosmolar nonketotic syndrome (HHNS) needs proper medical attention. However, herbal treatment has an authentic cure for this disease. 

Aloe vera is a very good herbal treatment for Hyperglycemia. All you need to do is clean and peel a big aloe vera leaf and soak in salted water for 25 mins. Rinse the soaked leaf in fresh water and boil it in two and a half glasses of water. When the potion is cold drink 1/3 glass of it thrice daily till the symptoms of Hyperglycemia are resolved and believe you me it would not take more than one week. Incidentally, aloe vera is very good for the skin also.