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  • Title: Saxagliptin, a potent, selective inhibitor of DPP-4, does not alter the pharmacokinetics of three oral antidiabetic drugs (metformin, glyburide or pioglitazone) in healthy subjects.
    Author: Patel CG, Kornhauser D, Vachharajani N, Komoroski B, Brenner E, Handschuh del Corral M, Li L, Boulton DW.
    Journal: Diabetes Obes Metab; 2011 Jul; 13(7):604-14. PubMed ID: 21332626.
    Abstract:
    AIM: To evaluate the pharmacokinetic interactions of the potent, selective, dipeptidyl peptidase-4 inhibitor, saxagliptin, in combination with metformin, glyburide or pioglitazone. METHODS: To assess the effect of co-administration of saxagliptin with oral antidiabetic drugs (OADs) on the pharmacokinetics and tolerability of saxagliptin, 5-hydroxy saxagliptin, metformin, glyburide, pioglitazone and hydroxy-pioglitazone, analyses of variance were performed on maximum (peak) plasma drug concentration (C(max)), area under the plasma concentration-time curve from time zero to infinity (AUC(∞)) [saxagliptin + metformin (study 1) and saxagliptin + glyburide (study 2)] and area under the concentration-time curve from time 0 to time t (AUC) [saxagliptin + pioglitazone (study 3)] for each analyte in the respective studies. Studies 1 and 2 were open-label, randomized, three-period, three-treatment, crossover studies, and study 3 was an open-label, non-randomized, sequential study in healthy subjects. RESULTS: Co-administration of saxagliptin with metformin, glyburide or pioglitazone did not result in clinically meaningful alterations in the pharmacokinetics of saxagliptin or its metabolite, 5-hydroxy saxagliptin. Following co-administration of saxagliptin, there were no clinically meaningful alterations in the pharmacokinetics of metformin, glyburide, pioglitazone or hydroxy-pioglitazone. Saxagliptin was generally safe and well tolerated when administered alone or in combination with metformin, glyburide or pioglitazone. CONCLUSIONS: Saxagliptin can be co-administered with metformin, glyburide or pioglitazone without a need for dose adjustment of either saxagliptin or these OADs.
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