Polygonum/ synthetic/ biosynthetic Resveratrol
Generally, polyphenol as well as t-Resveratrol aglycones (not connected to sugar molecule) have low solubility. In nature, polyphenols occur mainly as glycosylated (connected to sugar molecule) derivatives. The presence of glycosyl (glucose) groups connected to Resveratrol, i.e. T-Resveratrol- piceid, may nonetheless improve bioavailability due to higher solubility in water or in body fluids, and rapid gastrointestinal absorption compared with Resveratrol alone.