Juglone significantly inhibits the proliferation and induce the apoptosis of SiHa cells and Caski cells, stimulates suicidal erythrocyte death or eryptosis at least in part by upregulation of ceramide abundance, energy depletion and activation of PKC, and prevents high-fat diet-induced liver injury and nerve inflammation in mice through inhibition of inflammatory cytokine secretion, NF-kappa B activation and endotoxin production. It’s a natural product isolated and purified from the barks of Juglans regia L..