- Sitagliptin, an dipeptidyl peptidase-4 inhibitor, does not alter the pharmacokinetics of the sulphonylurea, glyburide, in healthy subjects. Mistry, G.C., Bergman, A.J., Zheng, W., Hreniuk, D., Zinny, M.A., Gottesdiener, K.M., Wagner, J.A., Herman, G.A., Ruddy, M. Br. J. Clin. Pharmacol (2008)