IRCT138803061957N2 IRCT 2012-09-12 Research Institute for Islamic and Complementary Medicine Hypoglycemic effects of Rosa canina Effects of Rosa canina extract in type 2 Diabetic patients 2012-03-10 anticipated 60 Complete https://irct.ir/trial/1548 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Treatment, Other design features: Randomization will be done by "Block Randomization” method. Practitioners and patients are blind about type of interventions. Both drug and placebo capsules are similar in shape, size and color. Both groups take their interventions twice daily. 2 Non-insulin dependent diabetes mellitus. Intervention 1: Intervention: Capsules of 750 mg powdered aqueous extract of Rosa canina twice daily by mouth for 2 months. Drug was prepared in the laboratory of traditional medicine in" Research Institute for Islamic and Complementary Medicine”. Effective ingredients of this drug have not been evaluated. Intervention 2: Control: Capsules of 750 mg corn starch twice daily by mouth for 2 months. Groups are similar in shape and color of capsules.