In vitro- data viste, at sitagliptin ikke er en hæmmer af CYP- isozymerne CYP3A4, 2C8, 2C9, 2D6, 1A2, 2C19 eller 2B6, og det inducerer ikke CYP3A4 og CYP1A2.
In vitro data showed that sitagliptin is not an inhibitor of CYP isoenzymes CYP3A4, 2C8, 2C9, 2D6, 1A2, 2C19 or 2B6, and is not an inducer of CYP3A4 and CYP1A2.