Gliptin are used when your first phase insulin response is not enough for the carbs you eat.
Mainly because of insulin resistance or high circulating insulin levels that are of no use.
the additional insulin should lower the spike initially, which is better for you.
However, the meds can have side effects. Please discuss with your GP, as he has the significant knowledge of the reasons for prescribing the gliptin. And an alternative be found.
Gliptin alone, are designed not to cause hypos.