An observational and multicenter study to assess the effectiveness and safety of Glucobay®- M under daily life treatment of type-2 diabetes patients.The study objectives are to investigate the effectiveness and safety of Glucobay® -M on blood glucose and patients body - weight. Glucobay®- M is taken 1-3 times daily. All patients with type 2 diabetes mellitus, where investigator feels that addition of Glucobay®-M would be beneficial to patients will be included in non- interventional study. The routine investigation suggested by the attending physician will be done in diabetic patients. No additional investigation will be done for the study purpose. The uncontrolled diabetic patient on existing treatment and prescribed Glucobay®-M will be included in study after taking the informed consent. The patient will be asked to attend 2 follow up visit each after 6 weeks. All patients receiving at least one tablet will be included in the safety analysis.The study is planned to be carried out in 10000 patients from 320-350 trial sites in India.