Vasorelaxant effect of water fraction of and its mechanisms in spontaneously hypertensive rats aortic ring preparation.

Introduction: has been reported to possess activities including antioxidant, anti-aging and anti-cancer but there is no report on its vasorelaxant effects.

Objective: This study aims to fractionate water extract of , identify the compound(s) involved and elucidate the possible mechanism(s) of its vasorelaxant effects.

Methods: Water extract of was subjected to liquid-liquid extraction to obtain ethyl acetate, n-butanol and water fractions.