Another benefit of Technosphere,worth noting, is that it appears to eliminate some of the nasty side effects of the drugs.

"Indeed, in their first human trial, Mannkind found that MKC253 was well tolerated by the trial participants. Even with the highest dosage of MKC253, they did not find any of the nausea and vomiting characteristically associated with such dosage levels. In fact, they reached levels of GLP-1 in the blood of more than 3 times the level which has been found to cause unacceptable side effects when injecting, and still found no side effects by inhalation! (By the way, it should be pointed out that all this talk about GLP-1 and DPP-IV is only pertinent to Type 2 Diabetics, whose bodies are still capable of making insulin. Type 2 Diabetics comprise 90% – 95% of all diabetics.) "

http://seekingalpha.com/article/81899-mannkind-overlooked-biotech-with-excellent-prospects-part-v