“…1 Ki ratios; Ki represents the inhibitory constant and is defined kinetically as the ratio of rate constants for the binding of a drug to a target receptor. 2 Ki ratios determined from the antilog of pKi values ODB -Ontario drug benefits β3-adrenoceptor agonist therapy for OAB While antimuscarinic medications have been the mainstay of oral therapy for OAB, close to 30% of OAB patients are now being prescribed mirabegron (35,36), currently the only approved β3adrenoceptor agonist for OAB. These medications are particularly appealing for the OAB patient population as they appear to have limited adverse effects relative to antimuscarinics (46,47).…”