(R)-Oxybutynin (Aroxybutynin) is an orally active muscarinic receptor antagonist, which exhibits antimuscarinic, antispasmodic, and anticholinergic activity. This compound, being the (R)-isomer of Oxybutynin, competitively antagonizes Carbachol-induced contractions. It is particularly useful in researching neurogenic bladder dysfunction-related incontinence [1] [2] [3].