Hello there I have read through your question and would like to tell you Januvia is an anti diabetic and your physician must have prescribed it because you must be having diabetes. It is not advisable to stop it as your blood sugar levels will shoot up and may cause serious organ damage in the long run. If you are experiencing any discomfort with this medicine you can switch to a different antidiabetic. I would advise you to discuss that with your physician. Also maintaining a strict diet and avoiding sugar and carbohydrates along with a good fitness regime helps to bring down the blood sugar levels. I hope that answers your question. If you have any further questions please feel free to write. Thank you for choosing healthcare magic.