MPO and colitis: Similarly, scientists have correlated the anti‐inflammatory action of volatile oils obtained from PAG (100, 200, and 400 μL/kg) with its chemical content (phenolics, terpenoids, and flavonoids) that lowered the rate of colitis and tissue myeloperoxidase action in acetic acid (4%)‐induced colitis in rats (Minaiyan et al. 2015).