This compound is a plant flavonol and it is found in many fruits, vegetables, grains, and leaves. The more convenient way would be to supplement with it since it’s much easier to obtain the required amount for your body. But how does it work you may be wondering. Well, it has an extraordinary ability to stabilize mast cells and ease the process of releasing histamine. Histamines are chemicals which your body releases when it thinks it’s under attack by a foreign substance. In this case harmless foods or environmental factors. So, give quercetin a try.