Mean systemic exposure over 14 hours was comparable (AUC 0-t, 23,227 for AB MDPI and 20,939 for AB HFA), C max was higher for AB MDPI (4422.8 pg/mL) vs AB HFA (3303.8 pg/mL), and T max occurred earlier with AB MDPI (2.48 h) vs AB HFA (3.05 h).