Pterostilbene is a polyketide synthase-derived stilbene originally isolated from P. santalinus that has diverse biological activities.^1,2,3,4,5 It reduces photooxidative leakage induced by the herbicide acifluorfen in C. sativus cotyledon disks when used at a concentration of 30 µg/ml.² Pterostilbene (25 and 50 µM) inhibits invasion and migration of HepG2 hepatoma cells induced by 12-O-tetradecanoylphorbol 13-acetate (TPA).³ It inhibits the production of nitric oxide (NO) and prostaglandin E2 (PGE2) in LPS-stimulated RAW 264.7 macrophages when used at concentrations of 10 and 20 µM.⁴ Pterostilbene (100 and 300 µM) activates peroxisome proliferator-activated receptor α (PPARα) in H4IIEC3 rat hepatoma cells.⁵ It decreases plasma glucose and LDL levels and increases plasma levels of HDL in a hamster model of hypercholesterolemia induced by a high-fat diet when administered in the diet at 25 ppm.