Gracious organic's "Giant knotweed powder - 10:1" suggests that the powder is concentrated, with the ratio indicating that 10 units of the raw herb were concentrated into 1 unit of extract. Giant knotweed is one of the richest natural sources of resveratrol, a polyphenol compound with antioxidant properties. Resveratrol has been studied for its potential health benefits, including anti-inflammatory, antioxidant, and anti-aging effects. Resveratrol in giant knotweed extract may help support cardiovascular health by reducing inflammation, improving blood circulation, and protecting against oxidative damage to blood vessels. With Gracious Organic, unlock the full potential of Ancient Ayurveda.