Individualised dosage. Max daily dose of sitagliptin: 100 mg.
Patient inadequately controlled on maximal tolerated dose of metformin monotherapy Initially sitagliptin 50 mg bid + dose of metformin already being taken.
Switching from co-administration of sitagliptin & metformin Initiate at the dose of sitagliptin + metformin already being taken.
Patient inadequately controlled on dual combination therapy w/ maximal tolerated dose of metformin & sulphonylurea Sitagliptin 50 mg bid + dose of metformin similar to the dose already being taken.
Patient inadequately controlled on dual combination therapy w/ maximal tolerated dose of metformin & PPARγ agonist Sitagliptin 50 mg bid + dose of metformin similar to the dose already being taken.
Patient inadequately controlled on dual combination therapy w/ insulin & maximal tolerated dose of metformin Sitagliptin 50 mg bid + dose of metformin similar to the dose already being taken.
Renal impairment GFR 60-89 mL/min Max daily dose: Metformin 3,000 mg divided into 2-3 doses + sitagliptin 100 mg,
45-59 mL/min Max daily dose: Metformin 2,000 mg divided into 2-3 doses + sitagliptin 100 mg,
30-44 mL/min Max daily dose: Metformin 1,000 mg divided into 2-3 doses + sitagliptin 50 mg.