Study Status: Withdrawn
Recruit Status: Withdrawn
Study Type: Interventional
Official Title: Efficacy and Safety of Metformin in Preventing Patients With Risperidone From Weight Gain and Amenorrhea:a 24-week, Randomized, Placebo-controlled, Double-blind, Fixed-dos
Brief Summary: Some previous studies has demonstrated that Metformin can improve the weight gain which caused by antipsychotics. An our study, which will be published, also found that Metformin can improve the amenorrhea for patients with antipsychotics, approximately 60% patients recovery period. So the present study was designed to investigate the efficacy and safety of Metformin in preventing patients with Risperidone from weight gain and amenorrhea.