Efficacy of the Malva sylvestris L. flowers aqueous extract for functional constipation: A placebo-controlled trial

Complement Ther Clin Pract. 2015 May;21(2):105-11. doi: 10.1016/j.ctcp.2015.02.003. Epub 2015 Mar 7.

Abstract

Objective: To evaluate the efficacy of Malva sylvestris L. flowers extract for treatment of FC.

Method: Adults with FC were allocated to receive the M. sylvestris L. flowers aqueous extract syrup (MSL, 1 g extract/day) or placebo for four weeks. Frequency of constipation symptoms and stool forms were assessed every week. Self-reported improvement was assessed after treatment.

Results: Compared with placebo, more increase was observed in defecation frequency (F = 18.8, P < 0.001) and more decrease was observed in frequency of all constipation symptoms by MSL (F = 16.5 to 25.3, all P values <0.001). Also, the MSL group experienced more reduction in frequency of hard stool forms (45.4% vs. 9.1%, P < 0.001) and reported more improvement in all symptoms (all P values <0.01) than placebo.

Conclusion: The M. sylvestris L. flowers aqueous extract is efficacious and safe for the treatment of FC in adult patients. Investigating the mechanisms of action is warranted. IRCT2014031617032N1.

Keywords: Constipation; Herbal medicine; Malva; Malvaceae; Traditional medicine.

Publication types

  • Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Constipation / drug therapy*
  • Defecation / drug effects
  • Female
  • Flowers / chemistry*
  • Humans
  • Male
  • Malva / chemistry*
  • Middle Aged
  • Placebos
  • Plant Extracts / therapeutic use*

Substances

  • Placebos
  • Plant Extracts

Associated data

  • IRCT/IRCT2014031617032N1