Quercetin with Bromelain combines 800 mg of quercetin with bromelain, an enzyme from pineapple stem. Quercetin is a plant flavonoid commonly used for antioxidant support and for seasonal immune and histamine balance, while bromelain is often added to support absorption and to broaden the formula toward inflammatory comfort.
This is a straightforward two-part formula, so it suits you if quercetin is the main ingredient you want and you also like the addition of bromelain. Quercetin has been studied for its role in mast cell and histamine activity, which is one reason it is often used in allergy-season support.