Oramed will only ever be a basal insulin and will never compete with Afressa as a prandial med. Absorption through the lungs is nearly instantaneous; in an emergency situation, we often administer drugs via this route if no venous access is available. With the gut, proteins first must survive digestion by acids and enzymes. Then there is the transit time to get to the small intestine where the majority of absorbtion takes place. So you must have a carrier that survives digestion in the stomach and then dissolves or dissociates from your insulin substrate in the small intestine.
So complement - maybe; compete - no way.
