The phenolic compound and other active compounds were extracted from cinnamon, in anattempt to produce a drug from Medical and herbal Plants for the diabetes on rats. Theextraction process included two methods the first carrid out with 2% v/v acetic acid andpropanol, and in the second process 70% v/v ethanol and chloroform were used. In the detectionof extracts it was noticed that both conteined phenols, flavonoids, tannins and Glycosides andCoumarins, while the saponin showed up only in the alcoholic extract of cinnamon. The phenoliccompounds in the extracts of cinnamon were determined by using Ultraviolet Spectroscopy (UV)and other function groups such as phenols, aldehyedes, estars, hydrocarbons, alcohols andcarboxylic compounds were diagnosed by using Infrared spectroscopy (IR). The study of the halflethal dose (midl lethal) (LD50) was also examined by testing the toxicity of the two cinnamon 2015 مجلة مركز بحوث التقنيات االحيائية المجلد التاسع- العدد االول42extracts. Rats were used as laboratory animals in conducting the experiments. The rats were fedby the dose (100, 200, 300,400, 500 mg / kg of body weight). The results have shown that there isno toxic effect in the cinnamon extracts. Similar concentrations were used to determine theeffective dose of the extracts in reducing the level of glucose in the blood of healthy animals. Thedose (300) mg / kg of body weight of the animal body has proved to be the the most efficient as itdecreased. The fasting glucose (Glu) serum consider by following of the cinnamon extracts withthe adopted groups during the duration of (30) days in comparison with the control group (theinfected) and outperformed the treated given Glibenelinide (daonil) group. The biochemical testsshowed that the serum concentrations of each of cholesterol (TC),Triglyceride (TG), low densitylipoprotein (LDL-C) was lowered in each of the groups treated with both cinnamon extracts incomparison with the positive groups (infected) throughout the duration (30) days and overcomethe daonil treated group. However the serum high density lipoprotein (HDL-C) level wasincreased in cinnamon extract treated groups and decreased in the control group (infected).The serum concentrations of enzymes (GOT) and (GPT) were measured to test the liver functionafter where their levels were lowered after (30) days in the cinnamon extracts administeredgroups compared with the two other groups, the control (positive) and the Daonil. The Urea andCreatinine levels were measured to determine or test the kidney functions, where it was observedas from the early days of the infection in that animals infected by induced diabetes developedsymptoms of the illness, apparent in the high levels of urine which affected the functions ofkidney, but the long duration (30 days) of treatment with these extracts of cinnamon proved theirefficiency over the control group (positive).