Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Forest plot of the effect of palmitoylethanolamide (PEA) on chronic pain intensity [25,26,27,28,29,30,31,32,33,34,35]. Experimental refers to PEA, while control refers to placebo or active treatment comparator. Lines represent 95% confidence intervals for each study’s effect size, and the black diamond represents a pooled estimate using a random effects statistical model.
