Hi, gliptins work by improving the initial insulin response to whatever you have eaten, so that the spike derived from the glucose doesn't spike too high, and thus reducing the total glucose in your blood, before you eat again.
I use a different Gliptin to you and don't suffer side effects.
However if you do experience side effects listed on the pamphlet then discuss with your GP. Also, you have to watch out for Hypoglycaemia, as your blood glucose levels reduce to near normal levels.