The insulinotropic response to meal occurs within 30 minutes after an oral dose of GLUCOTROL in diabetic patients, but elevated insulin levels do not persist glipizide achizitie online beyond the time of the meal challenge. In elderly patients, debilitated or malnourished patients, and patients with impaired renal or hepatic function, the initial and maintenance dosing should be conservative to avoid hypoglycemic reactions see PRECAUTIONS section. The material on this site is for informational purposes only, and is not substitute for medical advice, diagnosis or treatment provided by qualified health care provider. Keep list of all your medications with you, and share the list with your doctor and pharmacist. During maintenance programs, Glipizide tablets should be discontinued if satisfactory lowering of blood glucose is no longer achieved. You may not be able to take glipizide, or you may require dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.