VA106483 has been administered to 184 subjects (including healthy adult subjects [males and females], children [males and females] with nocturia and 48 elderly males [aged 65 years and over]). It has been administered as single doses both intravenously, up to doses of approximately 250 mg and orally up to 50 mg It is also being investigated in approximately 123 male subjects (two-thirds on active medication, one third on placebo) with nocturia in a current study with dosing for up to 8 weeks.