This study tested whether psilocybin (an active compound from magic mushrooms) combined with eugenol (a natural compound from cloves) could reduce brain inflammation in mice. Researchers gave mice a substance that triggers inflammation in the brain and then treated them with these compounds before or after the inflammation started. The combination treatment, especially at a 1:50 ratio of psilocybin to eugenol, significantly reduced multiple inflammatory markers in the brain, suggesting this combination could potentially be helpful for treating brain inflammation-related conditions.