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 demonstrating overall pain scores comparing willow bark and placebo. Better pain control is shown in favor of willow bark over placebo. The study conducted by C. Biegert et al. comprised two distinct trials. The first trial focused on osteoarthritis and was designated as “C Biegert 2004”. The second trial, which centered on rheumatoid arthritis, was labeled “C Biegert 2004′”. See refs. [34,36,37,38].
