Inhaled insulin has been approved by the FDA, and I received many questions about "inhaled insulin" this week. I recommend that you consult with your physician about the use of inhaled insulin because each patient is different.
Because it is inhaled, it is quickly absorbed from the cells in the lungs. So its levels increase quickly in the blood. Thus, we probably need less insulin to get the same effects, which may be beneficial for patients. Importantly, we don't need needles.
Time will tell if this is a game changer or not. I always feel that we should keep on trying to make a better drug for patients.