Quercetin is a plant-derived flavonoid (a type of antioxidant) found naturally in many fruits, vegetables, and beverages such as apples, onions, berries, and tea. As a supplement, it is typically available in capsules, tablets, or powder form.
It is widely used to support overall health, particularly for its role in combating oxidative stress and inflammation in the body. Antioxidants like quercetin help neutralize free radicals—unstable molecules that can damage cells and contribute to chronic diseases
