Efficacy of the tincture of jalapa in the treatment of functional constipation: a double-blind, randomized, placebo-controlled study.

Background: Laxatives are much utilized, but few clinical trials assessed the efficacy of phytotherapics in the functional constipation.

Aim: The aim of this study was to evaluate the efficacy of the tincture of jalapa in the treatment of patients with functional constipation.

Methods: Double-blind, randomized, placebo-controlled clinical trial was used in this study.