I changed my medication to Metsigletic and now I have sugars of 180 - 209 mg / dl. Why?

Metsigletic contains metformin and sitagliptin, which improves pancreatic function, increases the levels of intestinal hormones that affect sugar levels and increases glucose-dependent insulin secretion. However, medication is only one component of the treatment of type 2 diabetes. They will not make sugar normal, no matter what. First of all, it is necessary to permanently change eating habits, regular physical activity (at least walking). It is also crucial to lose weight if you are overweight or quit smoking. It is true that after 2 weeks the first effects of treatment may already be, but it also depends on other factors and changes introduced by the patient. I also do not know what sugars you had before the change of treatment. It is also important when are these higher sugars? Maybe only in the morning? Or maybe in the evenings? What does your meal look like in these cases? How often do you measure sugar? Maybe these measurements are just single results and you should take more measurements to draw a conclusion? If you have changed your lifestyle and do not observe improvement after 2-4 weeks, it is also a question of whether the drug is taken in the right dose, in the right way and whether there are no interactions with other drugs or supplements that you use. I leave a link to the text that may interest you and to the video: https://www.gdziepolek.pl/blog/edukacja-seksualna-o-co-pacjenci-anonimowo-pytaja-farmaceutow