Punarnava for Edema Reduction

Research suggests that Punarnava (Boerhavia diffusa and the related Boerhavia procumbens) may have edema-reducing properties, based on two preclinical animal studies from 2015 and 2016 that demonstrated inhibition of carrageenan-induced paw edema in rats. Both studies point in a supportive direction, with one specifically identifying a rotenoid-rich fraction of Boerhavia diffusa as a likely contributor to this effect. However, the available evidence is limited to animal model experiments, and no human clinical trials or higher-order studies such as randomized controlled trials or meta-analyses have been identified in this body of research. Studies indicate that while the preclinical findings are promising, they cannot be directly extrapolated to human outcomes without further investigation.