Ethanolic extract of KP dose-dependently induced vascular and ileal relaxation in precontracted isolated tissue preparations. The spasmolytic effect of KP was not initiated by competitive binding at muscarinic receptors since no rightward shift of ACH dose–response curves was observed. Similar to the studies in aortic rings, it appears that KP antagonizes the given contractile stimuli (PE and ACH) with no specificity to their receptors and it may act through multiple mechanisms of actions. Further studies are worthwhile to pursue.