Formoterol Dose Ranging Study (ACHIEVE Duaklir USA Phase IIb)

This is a prospective, randomized, double-blind, 5-period incomplete unbalanced crossover, placebo and active comparator (open-label) controlled, multicenter clinical trial to assess the efficacy and safety of three doses of formoterol fumarate (6 μg, 12 μg and 24 μg) BID administered via Pressair® compared to placebo and to open-label formoterol fumarate (20 μg BID and 40 μg single dose) administered as an inhalation solution via a standard jet nebulizer (with a mouthpiece) connected to an air compressor (Perforomist® Inhalation Solution). The drug product is an inhalation powder comprising of micronized aclidinium bromide and micronized formoterol fumarate with α-lactose monohydrate as the carrier, presented in a breathactuated device-metered dry-powder inhaler (DPI). It has been approved under the trademarks of Genuair® and/or Pressair® in some territories.