Morin is a natural pentahydroxyflavonol with antioxidant activity. It reduces CD36 expression and oxLDL uptake in U937-derived macrophages, inhibits PIM-1 kinase in vitro (IC50 = 2.7 μM), and reduces the activity of cytochrome P450 isoform 3A4 in liver microsomes. Through these and other actions, morin has anti-oxidant, anti-inflammatory, and other actions in animal models.