Sitagliptin and Thrush

Hi. Sitagliptin for most people is not a problem drug. It works by extending the time the pancreas produces insulin after a meal by suppressing an enzyme that would otherwise switch the pancreas off. The presence of thrush implies the possibility of quite high blood sugar which your HBa1C shows isn't the case. All very strange and perhaps you should stop the drug for a while to see what happens, but check with your doctor.