I have been on Janumet for 3 months now, it is a combination of metformin and sitagliptin. At first I definitly felt queezy and got diarreah and did not want to eat at all. You are suppose to eat it with food. So I tried this, made myself eat it with a meal and i felt a LOT better, now i am fine with my 2,000mg dose. Good luck and I hope we all can get off any Meds were currently on. My doc told me I have to take this for 2 years.