Metform 500mg Tablet is a medication used to treat type 2 diabetes mellitus and Polycystic ovary syndrome (PCOS) in women. It helps control blood sugar levels and prevents complications. It is best taken with food and should be continued unless recommended by a doctor. Common side effects include nausea, vomiting, diarrhea, abdominal pain, and loss of appetite. It is important to monitor blood sugar levels and consult a doctor if you have kidney, liver, or heart problems.