In a study where the dosage form of three 1 mg blisters was compared with one 3 mg blister, Cmax and AUC of inhaling three 1 mg blisters were approximately 30% and 40% greater, respectively, than that of inhaling from one 3 mg blister, indicating that three 1 mg blisters are not interchangeable with one 3 mg blister (see sections 2, 4.2 and 4.4).