You need immediate medical assistance since your blood sugar levels (fasting 280, postprandial 315) are extremely high. Even if you have previously taken Istavel 100, do not take it alone because dosage needs to be monitored. For safe management and guidance, get in touch with your doctor very away.

There are less expensive generic variants of Istavel 100 mg (probably Sitagliptin). To be sure the dosage and quality match your prescription, always check with your doctor or pharmacist before making a change.