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Effect of ultramicronized-palmitoylethanolamide and co-micronized palmitoylethanolamide/polydatin on chronic pelvic pain and quality of life in endometriosis patients: An open-label pilot study

Stochino Loi E, Pontis A, Cofelice V, Pirarba S, Fais MF, Daniilidis A, Melis I, Paoletti AM, Angioni S. International Journal of Women's Health, 2019; 11:443-449.

Open-label, no control groupHumansWith polydatin

This study tested palmitoylethanolamide together with polydatin. Its results cannot be assigned to palmitoylethanolamide alone. More combination studies.

Design
Open-label, no control group
Subjects
30 women with endometriosis enrolled. 28 completed.
Dose used in the study
600 mg of ultramicronised palmitoylethanolamide twice a day for 10 days, then 400 mg of palmitoylethanolamide with 40 mg of polydatin twice a day for 80 days
Duration
90 days, with a 30-day follow-up
What was measured
Pelvic pain and related symptoms on visual analogue scales, quality of life and psychological wellbeing questionnaires.

What the authors reported

This open-label pilot study found:

  • Chronic pelvic pain scores fell from 7.2 to 2.6 (p < 0.0001), with smaller falls in period pain and other symptoms.
  • Quality of life and psychological wellbeing scores improved.
  • Use of pain medication fell.
  • The authors reported no serious side effects.

Limits of this study

A single-group study with no placebo and no blinding. The authors name the small sample, the open-label design and the short treatment period as limits. The authors reported no conflicts of interest. The funding statement was not visible on the page checked.

Source

PubMed 31496832 · doi:10.2147/IJWH.S204275

Entry checked against the abstract on PubMed, and the full text at the publisher (Dove Medical Press) on 2026-10-19. The dose shown is the dose the researchers used. It is not a recommendation. How to read this page.