Yes, this combination of metformin, clonazepam, and a multivitamin is generally safe to take together. There are no major known drug interactions between these medications. In fact, taking a multivitamin can be beneficial, as long-term metformin use can sometimes lower vitamin B12 levels. Since clonazepam can cause mild drowsiness, it is typically best taken in the evening. Please continue taking your medications exactly as prescribed by your doctor, monitor your blood sugar levels regularly, and let your healthcare provider know if you experience any unusual symptoms like extreme fatigue or dizziness.