Flavonoids are powerful antioxidant agents, which help the body fight potentially harmful molecules and can also help reduce the risk of some chronic health conditions. 

Flavonoids also help the body to regulate inflammatory reaction, thereby reducing uncomfortable symptoms that could be triggered by allergens, germs, toxins and other irritants. 

Flavanoids may also help reduce the risk of a heart attack or stroke. A study reported that people who consumed higher levels of flavonoids as part of their diet had a reduced risk of experiencing cardiovascular conditions. Furthermore, a diet high in flavonoids correlates to a reduced risk of type 2 diabetes.

The mulberry leaf is rich in flavonoids, including isoquercitrin, astragalin, kaempferol, quercetin, and rutin. Q3MG (quercetin 3-(6-malonylglucoside)) flavonoids has been suggested to help reduce blood glucose and cholesterol, as well as suppress the oxidation of LDL cholesterol, thereby protecting against plaque build-up in the arteries. Thus, it is one of the key quality markers of mulberry leaf extract.