aSquared Nutrition’s maximum strength Quercetin formula delivers 500mg of Quercetin Dihydrate per capsule, with 200 capsules providing a full 200-day supply. This powerful antioxidant and anti-inflammatory flavonoid, found naturally in berries and leafy greens, supports immune function, cardiovascular health, skin health, and anti-aging, while helping combat allergies, inflammation, and oxidative stress. Made in the USA, this vegan-friendly, non-GMO, gluten-free, soy-free, and preservative-free supplement is third-party tested for purity and potency.