Quercetin, a natural plant pigment belonging to the flavonoid and antioxidant family, may offer health benefits like reducing inflammation and the risk of certain diseases.
Found in various fruits, vegetables, and plants common in our region, such as apples, onions, berries, citrus fruits, leafy greens, and tea, quercetin helps protect these plants from environmental stressors like UV radiation and pathogens.
In human health, quercetin is recognized for its potential health benefits. It exhibits antioxidant properties, which means it can help neutralize harmful free radicals in the body and reduce oxidative stress. Additionally, quercetin has anti-inflammatory effects, which may help in reducing inflammation and related conditions.
Quercetin is also known for its potential immune-modulating properties, as it can inhibit certain enzymes and signaling pathways involved in the immune response. This has led to research exploring its role in supporting immune function and potentially benefiting individuals with allergies, asthma, and other immune-related conditions.
While quercetin occurs naturally in foods, it can also be found as a supplement. However, it’s important to remember that how well the body absorbs quercetin from food and supplements can differ, and researchers are still exploring its potential benefits.
Food sources of quercetin
Quercetin is found in high amounts in many plant-based foods, especially in their outer layers or peels. Great food sources include capers, yellow and green peppers, red and white onions, shallots, cooked asparagus, cherries, tomatoes, red apples, red grapes, broccoli, kale, red leaf lettuce, and various berries like cranberries, blueberries, and raspberries, as well as green and black tea.
Best Quercetin Supplements
Solgar Quercetin Complex
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Ester-C Plus – unique formula for immune health support.
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Has antioxidant properties which help to stabilize cell membranes.
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This formula also includes the added benefits of acerola berry, citrus bioflavonoids, rutin, and rose hips, and it features bromelain as well.
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This product is non-GMO, free from gluten, wheat, and dairy, and suitable for vegans.
NOW Supplements, Quercetin with Bromelain
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This product is Kosher, non-GMO, soy-free, and suitable for vegan or vegetarian diets.
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It’s also made without gluten and dairy, GMP quality assured.
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Supports immune and respiratory health.
Sports Research Quercetin with Coconut MCT Oil
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Quercetin Biolipid Complex for better absorbtion.
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This product contains coconut oil and lecithin and is standardized to 95% quercetin powder.
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This product is non-GMO, free of soy and gluten, third-party tested, and GMP compliant.
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Supports antioxidant activity and seasonal immune system function.

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Quercetin is thought to have antioxidant and anti-inflammatory effects. While its potential benefits for various health conditions have been explored, more research is needed before quercetin supplements can be recommended for specific health purposes.




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