Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional
Official Title:
Brief Summary: This is a prospective, randomized, double-blind, placebo-controlled study about the effect of metformin in patients with mild Graves' ophthalmopathy. Eighty patients with mild ophthalmopathy will be included. Each patient will be given either metformin (500mg PO three times a day) or placebo ( PO three times a day ) for 6 months and then followed for 6 months after withdrawal of treatment.