Jarrow Formulas® Resveratrol Synergy® brings together resveratrol (3,4’,5-trihydroxystilbene) and other naturally–occurring phenolic antioxidant compounds to form a potent synergistic formula that promotes the normal activation of the body’s endogenous antioxidant network and supports the cardiovascular system.* Pterostilbene (Silbinol®), also known as dimethylresveratrol, is a naturally-occurring, methylated form of resveratrol. Methylation helps improve intestinal and cellular uptake of this important phytochemical while reducing excessive liver clearance.*