Propiverine N-oxide is an active metabolite of the muscarinic acetylcholine receptor antagonist propiverine .[1] In vivo, propiverine N-oxide (0.422 mg/kg) reduces sacral anterior root stimulation-induced bladder contractions and salivary flow in mini pigs.
References:
[1].Scheepe, J.R., Braun, P.M., Jünemann, K.P., et al.Effects of propiverine and its metabolite propiverine-N-oxide on bladder contraction and salivation in mini pigsUrol. Int.81(4)468-473(2008).