The manufacturer of this med declare that ketones are a common side effect of this med. We have seen reports of DKA being possibly associated with this class of medications. It is not clear why this may be, but the way the med works is to apply a chemical override on the pancreas that bypasses the normal feedback control mechanisms in the body that protect us, so the extra insulin that this triggers is not controlled (whereas the same effect from a sulfonylurea med is controlled by the feednack of glucagon) and this may under certain conditions trigger DKA. These conditions may be ~Low Carb or keto diet, fasting, missed meals. I would advise not using these other interventions while being treated with any of this class of medications until there has been more research into this. You ought to invest in some means of testing for ketones anyway, such as weestix or strips if your meter can do ketone testing.
