and sudden kidney problems. ketoacidosis is a serious side effect that may be fatal. a rare, but life-threatening, bacterial infection in the skin of the perineum could occur. stop taking jardiance and call your doctor right away if you have symptoms of this bacterial infection, ketoacidosis, or an allergic reaction. do not take jardiance if you are on dialysis or have severe kidney problems. taking jardiance with a sulfonylurea or insulin may cause low blood sugar. so, what do you think? now i feel i can do more to go beyond lowering a1c. ask your doctor about jardiance today.