Metabolomic change due to combined treatment with myo-inositol, D-chiro-inositol and glucomannan in polycystic ovarian syndrome patients: a pilot study

J Ovarian Res. 2019 Mar 23;12(1):25. doi: 10.1186/s13048-019-0500-x.


Background: Polycystic ovarian syndrome (PCOS) is a highly variable syndrome and one of the most common female endocrine disorders. Although the association inositols-glucomannan may represent a good therapeutic strategy in the treatment of PCOS women with insulin resistance, the effect of inositols on the metabolomic profile of these women has not been described yet.

Results: Fifteen PCOS-patients and 15 controls were enrolled. Patients were treated with myo-inositol (1.75 g/day), D-chiro-inositol (0.25 g/day) and glucomannan (4 g/day) for 3 months. Blood concentrations of glucose, insulin, triglycerides and cholesterol, and ovary volumes and antral follicles count, as well as metabolomic profiles, were evaluated for control subjects and for cases before and after treatment. PCOS-patients had higher BMI compared with Controls, BMI decreased significantly after 3 months of treatment although it remained significantly higher compared to controls. 3-methyl-1-hydroxybutyl-thiamine-diphosphate, valine, phenylalanine, ketoisocapric, linoleic, lactic, glyceric, citric and palmitic acid, glucose, glutamine, creatinine, arginine, choline and tocopherol emerged as the most relevant metabolites for distinguishing cases from controls.

Conclusion: Our pilot study has identified a complex network of serum molecules that appear to be correlated with PCOS, and with a combined treatment with inositols and glucomannan.

Trial registration:, NCT03608813 . Registered 1st August 2018 - Retrospectively registered, .

Keywords: Inositols-glucomannan association; Metabolomics; Polycystic ovary syndrome.

Publication types

  • Clinical Trial

MeSH terms

  • Adolescent
  • Adult
  • Body Mass Index
  • Case-Control Studies
  • Drug Therapy, Combination
  • Female
  • Humans
  • Inositol / administration & dosage*
  • Inositol / pharmacology
  • Mannans / administration & dosage*
  • Mannans / pharmacology
  • Metabolome / drug effects*
  • Ovary / drug effects
  • Ovary / pathology
  • Pilot Projects
  • Polycystic Ovary Syndrome / blood
  • Polycystic Ovary Syndrome / drug therapy*
  • Polycystic Ovary Syndrome / pathology
  • Young Adult


  • Mannans
  • (1-6)-alpha-glucomannan
  • Inositol

Associated data