A nitrogen-containing heterocyclic derivative represented by the following general formula (I), or a hydrate or solvate thereof, which has a selective antagonistic action on the muscarinic M
3
receptor and causes reduced cardiac side effect and thus is safe, and has superior pharmacological efficacy and prolonged action even by inhalation administration, and a pharmaceutical composition comprising the compound and a pharmaceutically acceptable carrier.
A nitrogen-containing heterocyclic derivative represented by the following general formula (I), or a hydrate or solvate thereof, which has a selective antagonistic action on the muscarinic M3 receptor and causes reduced cardiac side effect and thus is safe, and has superior pharmacological efficacy and prolonged action even by inhalation administration, and a pharmaceutical composition comprising the compound and a pharmaceutically acceptable carrier.