Thorne Quercetin Complex

Hard training sessions temporarily suppress immune function in the hours afterward, a well-documented window where athletes report more sniffles and scratchy throats than their training volume alone would explain. Pollen season often overlaps directly with peak race season for many athletes, stacking a second immune challenge on top.

Thorne Quercetin Complex pairs 250mg of quercetin phytosome with 100mg of bromelain in every capsule, targeting both the histamine response behind seasonal allergies and the inflammatory pathways tied to minor bumps and bruises from training.

Built for better absorption – Quercetin on its own doesn't absorb particularly well. Binding it to phospholipids as a phytosome changes that, getting more of it into circulation instead of passing through unused.

Two mechanisms in one capsule – Quercetin stabilizes mast cells to reduce histamine release, while bromelain works through separate kinin and fibrin pathways tied to swelling and bruising.

A genuine dual-use formula – Useful during allergy season for the histamine angle, and separately useful after a fall, crash, or minor soft-tissue bump for the bromelain angle, without needing two different products.

Quercetin is a flavonoid found naturally in onions, capers, and apples, and it works partly by stabilizing mast cells so they release less histamine when they encounter an allergen. It also scavenges free radicals and appears to inhibit the oxidation of LDL cholesterol, giving it a broader antioxidant role beyond allergy support. Bromelain, a proteolytic enzyme from pineapple stems, has been studied for reducing swelling and bruising following minor injuries, and it also improves how well quercetin itself gets absorbed.

How to Use Thorne Quercetin Complex

Dose: Take one capsule three times daily, or as recommended by your health-care practitioner.

During allergy season or after a minor injury: Consistency matters more than timing for the allergy angle, since mast cell stabilization builds with regular use. For bruising or swelling after a bump, bromelain's effect tends to build over several days of consistent use rather than showing up immediately.

Bromelain has fibrinolytic effects that may inhibit blood clotting, so use this with caution or avoid it entirely if you're on anticoagulant therapy or have upcoming surgery. Consult your healthcare provider before use if pregnant.