Средната доза на глипизид, използвана в сравнителната група е 10 mg на ден, като по време на изпитването приблизително 40% от пациентите са се нуждаели от доза ≤ 5 mg на ден.
In a study comparing the efficacy and safety of the addition of Januvia 100 mg once daily or glipizide (a sulphonylurea agent) in patients with inadequate glycaemic control on metformin monotherapy, sitagliptin was similar to glipizide in reducing HbA1c The mean glipizide dose used in the comparator group was 10 mg per day with approximately 40% of patients requiring a glipizide dose of ≤ 5 mg/ day throughout the study.