Described are novel amino- and iminoalkyl piperazines having affinity for serotonergic receptors and pharmacological compositions thereof. These compounds and their isomers, including optical isomers, enantiomers, diastereomers, N-oxides, polymorphs, hydrates, solvates and pharmaceutically acceptable salts are useful in the treatment of patients with neuromuscular dysfunction of the lower urinary tract and CNS diseases and/or disorders associated with 5-HT
1A
receptor dysfunction.