I den undersøgelse, der sammenlignede Januvia med glipizid som et supplement til metformin, var glipizid i starten bedre til at reducere HbA1c- niveauet end Januvia.
In the study comparing Januvia and glipizide as an add-on to metformin, glipizide was initially more effective than Januvia in reducing HbA1c levels.