A random blood sugar level of 311 mg/dL is high, indicating your current diabetes management plan needs adjustment. Glimepiride (the active ingredient in your medication) is an effective drug for diabetes, but your current dosage or regimen may not be sufficient right now. You should consult your doctor promptly to review and adjust your treatment. Please do not change your medication dose on your own. Meanwhile, drink plenty of water and avoid sugary foods. Seek immediate medical care if you start experiencing severe symptoms like persistent nausea, vomiting, confusion, or rapid breathing. Your doctor will safely help get your sugar levels back on track.