A 5-HT4 receptor agonist (IC50 = 0.483 μM in a Cos-7 receptor binding assay); pEC50 = 6.99 in an esophageal contraction assay; increases contractility and motility within the gastrointestinal tract; induces cardiac arrhythmia by inhibiting cardiac K+ channel subunit Kv11.1 (IC50 = <1 μM)