'Quercetin is an flavonoid (plant pigment) commonly found in fruits and vegetables, especially onions, citrus, and apples. Other sources include dark berries, grapes and olive oil. Green tea and red wine have also been pointed out as having notable amounts of quercetin.
That’s all great. But, what does it do for us? Well, perhaps the primary benefit of quercetin is that it possesses potent antioxidants. Antioxidants fight against free radicals –- chemically reactive compounds that damage cell membranes and DNA and also cause cell death. In fact, many of the benefits you’ll often hear attributed to antioxidants refer to the the effects associated with quercetin. Let’s take a look at what some of them are.'
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