Hi
You may want to Google the web and download the NICE diabetes guidelines for GPs for both the NHS in general and I also found some for my County (Hertforshire NHS). The flowcharts are very useful and make a lot of sense. The gliptin group are treated as a 3rd level regime after Metformin and the sulphonylureas such as gliclazide so it does seem unusual for you to have been put straight onto a gliptin (they are expensive!). I now take Januvia (Sitagliptin) which has worked really well for me over the last few weeks indicating the the DPP-4 scenario works well for me but everyone is different of course.