Effect of rhubarb (Rheum emodi) in primary dysmenorrhoea: a single-blind randomized controlled trial.

Background: The aim of this study was to investigate and evaluate the efficacy of Rheum emodi in the management of primary dysmenorrhoea.

Methods: A randomized, single-blind, standard controlled trial compared efficacy of R. emodi against mefenamic acid on diagnosed subjects of primary dysmenorrhoea for three consecutive cycles.