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Evaluation of the nutraceutical Palmitoylethanolamide in reducing intraocular pressure (IOP) in patients with glaucoma or ocular hypertension: a systematic review and meta-analysis

Crupi L, Capra AP, Paterniti I, Lanza M, Calapai F, Cuzzocrea S, Ardizzone A, Esposito E. Nat Prod Res. 2025;39(4):797-816.

Meta-analysisHumans

Design
Meta-analysis
Subjects
6 studies with 199 patients in the systematic review; 3 studies pooled
Dose used in the study
As used in the included studies, mostly 300 mg twice daily
Duration
Searched to August 2023
What was measured
Intraocular pressure in glaucoma or ocular hypertension

What the authors reported

A significant reduction in intraocular pressure with palmitoylethanolamide across the pooled studies.

Limits of this study

Only three small studies were pooled, and the abstract gives no effect size or heterogeneity. The included trials are the Gagliano, Strobbe, Costagliola and Pescosolido studies already on this site, so this review adds no new patients. The Messina authors have long-standing links with Epitech.

Source

PubMed 38269580 · doi:10.1080/14786419.2024.2306916

Entry checked against the abstract on PubMed on 2026-09-22. The dose shown is the dose the researchers used. It is not a recommendation. How to read this page.