Resveratrol is a polyphenolic bioflavonoid with powerful antioxidant properties, most commonly found in grapes, red wine, and certain berries. It is thought to be one of the key compounds behind the potential health benefits often associated with moderate wine consumption. As a supplement, resveratrol is widely used for its potential to support cardiovascular health, promote longevity, and combat oxidative stress. Emerging research also suggests that resveratrol may help support cognitive function by enhancing cerebral blood flow, though further studies are needed to fully understand this effect.