Hi, I'm on sitagliptin, and any of these types of inhibitors have had bad press.
I don't have side effects at all, the case for getting side effects is pretty slim to none.
I would start taking them, having high blood glucose levels is probably in the long run worse than not taking them.
If after the first month you are not happy do seek medical advice.
How is your diet?
There is quite a lot you can achieve with your blood glucose levels with a change in diet and a little bit more walking. At our age that's about we can achieve!
Do have a look around the low carb forum.