"Importantly, clinical studies indicate Levadex may not have the same level of pulmonary side effects as other aerosolized medications, such as Alexza Pharmaceuticals' (ALXA) Adasuve and MannKind Corporation's (MNKD) Afrezza."
http://seekingalpha.com/article/1152371-map-s-levadex-ready-for-fda-approval?source=google_news