Type of study: a randomized, double-blind study using the Quercetine in the treatment of patients with SARS COV2 (covid-19) Quercetin is extracted from a variety of plant sources, including the onion peel and the seeds and pods of Dimorphandra mollis, a legume tree native to South America.
Although we are far from knowing everything about quercetin, its antioxidant, anti-inflammatory, and antihistamine (antiallergic) properties have been observed in numerous in vitro and animal studies.
History on quercetin In 1937, Albert Szent-Gyorgyi received a Nobel Prize for discovering vitamin C and flavonoids, as well as for exploring their biochemical properties. Originally, he gave the flavonoids the name "vitamin P" because of their effectiveness in reducing the permeability of blood vessels. This name was abandoned when it was realized that these substances were not really vitamins.