Drug interaction with medication: Omarigliptin interacts with metformin, glimepiride, oral contraceptives and atorvastatin. Other anti-diabetic drugs (in particular, insulin preparation or sulfonylurea) should be used with caution in combination with omarigliptin, as they may cause hypoglycemia. Precaution must be taken with drugs that enhances the hypoglycemic action (3-blockers, salicylic acid agents, monoamine oxidase inhibitors). Blood glucose level should be carefully monitored when using drugs that attenuate the hypoglycemic action (adrenaline, adrenocorticotropic hormone, thyroid hormone).