 The purpose of this study is to evaluate the pharmacokinetic interaction when CHF5993 pressurized metered-dose inhaler pMDI is administered with Cimetidine probe inhibitor of the organic cation transport in the kidneys, by comparing the systemic exposure AUC0-t of Glycopyrronium Bromide GB, after a single dose of the fixed combination CHF 5993 pMDI administered alone or at steady-state of Cimetidine 