Quercetin + Bromelain — 120 Veg Capsules — Antioxidant, Allergy & Immune Support*

LifeSource Vitamins Quercetin + Bromelain delivers a clinically informed combo of quercetin (flavonoid antioxidant) and bromelain (proteolytic enzyme) to support healthy histamine balance, immune resilience, joint comfort, and overall inflammatory response.* Produced in FDA-registered, GMP-certified facilities and 3rd-party tested for identity, potency & purity.

Research Promise: At LifeSource Vitamins, our commitment is rooted in research and results. Every benefit below is supported by human clinical studies indexed in the National Institutes of Health (NIH) via PubMed, with full texts available in the National Library of Medicine (NLM) PubMed Central (PMC) when available. In addition, we reference reviews from 39 leading health organizations and insights from 20 top global universities to ensure our guidance aligns with credible science.*

Clinically Studied Benefits (with research)

• Healthy inflammatory response (CRP) — Quercetin with enzymes showed favorable effects on systemic inflammation markers in adults. (NIH/PMC)

• Illness recovery support — Quercetin–bromelain adjuncts have been studied for shortening symptom course in viral upper-respiratory contexts. (NIH/PMC)

• Potent antioxidant capacity — Human and ex-vivo data show enhanced oxidative-stress defense with quercetin and bromelain. (NIH/PMC)

• Anti-allergy & histamine modulation — Quercetin stabilizes mast cells and modulates histamine and leukotrienes (human/clinical contexts). (NIH/PMC)

• Enzyme support for comfort — Bromelain supports sinus/respiratory comfort and helps maintain healthy inflammatory balance. (NIH/PMC)

• Cardiometabolic markers — Reviews link quercetin intake to improvements in endothelial function and blood-pressure measures. (NIH/PMC)

Additional Studies Showing Promising Benefits*

• Respiratory wellness (pilot/adjunct) — Early studies suggest symptom relief and reduced healthcare use with quercetin-enzyme regimens. (NIH/PubMed)

• Neuro comfort — Quercetin investigated for adjunct roles in migraines/neurologic health. (NIH/PubMed)

• Metabolic health — Reviews detail quercetin’s effects on glycemic and vascular endpoints. (NIH/PMC)

• Systemic enzyme therapy — Bromelain discussed across GI, ENT, and soft-tissue recovery contexts. (NIH/PMC)

University Studies (Promising — Human / Academic Research)

• Allergy/Immunology programs — Human-oriented research on quercetin’s mast-cell stabilization and late-phase allergy responses. (NIH/PMC)

• Nutrition & metabolism groups — Reviews from academic centers summarize cardiometabolic and antioxidant effects of quercetin. (NIH/PMC)

Global Evidence & Authoritative Reviews*

• NCCIH — Evidence & safety context for botanicals and enzymes. (NCCIH)

• EMA — Bromelain’s approved topical medical use (eschar removal) for clinical context. (EMA)

We monitor research from the world’s leading institutions — including Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge University, Oxford, Stanford, Yale, MIT, the University of Florida, Oregon State University – Linus Pauling Institute, Tufts, Boston University, Cornell, Columbia, and Ohio State — to ensure our guidance remains aligned with the highest standards of credible science.*

Brief Benefit Bullets

• Antioxidant defense against everyday oxidative stress*

• Supports healthy inflammatory balance & CRP*

• Natural antihistamine & seasonal-allergy support*

• Immune & respiratory wellness support*

• Joint & tissue comfort support*

• Enzyme–flavonoid combo for complementary actions*

• 3rd-party lab tested for purity & potency

See All LifeSource Vitamins Quercetin & Immune-Support Products

Suggested Use: Adults take 2 capsules daily with a meal, or as directed by your healthcare professional.*

Product Specifications

• Serving Size — 2 Veg Capsules

• Servings Per Container — 60

• Actives — Quercetin 800 mg; Bromelain 165 mg (2400 GDU/g)

• Other Ingredients — Rice Flour; Hypromellose (cellulose capsule); Microcrystalline Cellulose; Magnesium Stearate (vegetable source); Silicon Dioxide

• Claims — Citrus-Free

• Free From — Not manufactured with yeast, wheat, gluten, soy, milk, egg, fish, shellfish, tree-nut or sesame ingredients*

• Quality — Third-party tested for identity, potency & purity

• Count — 120 Veg Capsules

Perfect For

• Adults seeking seasonal-allergy, sinus & respiratory support*

• Individuals looking for antioxidant & healthy inflammatory balance*

• Joint/tissue comfort and active-lifestyle recovery*

Key Ingredients

Quercetin — bioflavonoid antioxidant that supports mast-cell stability, histamine balance, vascular and immune health.* (NIH/PMC; NIH/PMC)

Bromelain — proteolytic enzyme from pineapple that supports sinus comfort, tissue recovery and healthy inflammatory response.* (NIH/PMC)

3rd-Party Testing: Every batch is verified by independent labs for identity, potency, and purity. Click here to see our 3rd-party testing.

LifeSource Vitamins — Proudly American — Since 1992

*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Quercetin 800 mg + Bromelain 165 mg (2400 GDU/g) — seasonal-allergy, antioxidant & inflammatory-response support. Clinically Studied Ingredients — NIH/PubMed!*

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