Diabetes is a chronic disease that occurs either when the pancreas does not produce enough insulin or when the body cannot effectively use the insulin it produces. Plants have played a significant role in maintaining human health and improving the quality of life for thousands of years .Herbal supplements may be effective in prevention and treatment of diseases. Currently, there is renewed interest in plant-based medicines and functional foods modulating physiological effects in the prevention and cure of diabetes. The plant kingdom is a wide field to search for natural effective oral anti-hyperglycemic agents that have slight or no side effects Aloe vera gel and its derived phytosterols have a long-term blood glucose level control effect and would be useful for the treatment of type 2 diabetes mellitus.
