LifeSource Vitamins 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-Driven & Verified Product.
Explore the clinical research, ingredient science, and global evidence supporting this product below.
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
✓ Healthy inflammatory response (CRP) — Quercetin with enzymes showed favorable effects on systemic inflammation markers in adults.
NIH/PMC — 2023
✓ Illness recovery support — Quercetin–bromelain adjuncts have been studied for shortening symptom course in viral upper-respiratory contexts.
NIH/PMC — 2022
✓ Potent antioxidant capacity — Human and ex-vivo data show enhanced oxidative-stress defense with quercetin and bromelain.
NIH/PMC — 2023
✓ Anti-allergy & histamine modulation — Quercetin stabilizes mast cells and modulates histamine and leukotrienes (human/clinical contexts).
NIH/PMC — Mlček, 2016
✓ Enzyme support for comfort — Bromelain supports sinus/respiratory comfort and helps maintain healthy inflammatory balance.
NIH/PMC — Rathnavelu, 2016
✓ Cardiometabolic markers — Reviews link quercetin intake to improvements in endothelial function and blood-pressure measures.
NIH/PMC — Aghababaei, 2023
Additional Studies Showing Promising Benefits*
✓ Respiratory wellness (pilot/adjunct) — Early studies suggest symptom relief and reduced healthcare use with quercetin-enzyme regimens.
NIH/PubMed — 2022
✓ Neuro comfort — Quercetin investigated for adjunct roles in migraines/neurologic health.
NIH/PubMed — 1999
✓ Metabolic health — Reviews detail quercetin’s effects on glycemic and vascular endpoints.
NIH/PMC — Aghababaei, 2023
✓ Systemic enzyme therapy — Bromelain discussed across GI, ENT, and soft-tissue recovery contexts.
NIH/PMC — Rathnavelu, 2016
University-Led & Academic Studies
✓ Allergy/Immunology programs — Human-oriented research on quercetin’s mast-cell stabilization and late-phase allergy responses.
NIH/PMC — Mlček, 2016
✓ Nutrition & metabolism groups — Reviews from academic centers summarize cardiometabolic and antioxidant effects of quercetin.
NIH/PMC — Aghababaei, 2023
We monitor research from leading institutions —
Harvard, Johns Hopkins, Mayo Clinic, Cleveland Clinic, Cambridge, Oxford, Stanford, Yale, MIT, the University of Florida, Oregon State University – Linus Pauling Institute, Tufts, Boston University, Cornell, Columbia, Ohio State — to align with credible science.*
Key Ingredients
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Quercetin — Bioflavonoid antioxidant that supports mast-cell stability, histamine balance, vascular and immune health (NIH/PMC — Mlček, 2016; Aghababaei, 2023).
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Bromelain — Proteolytic enzyme from pineapple that supports sinus comfort, tissue recovery and healthy inflammatory response (NIH/PMC — Rathnavelu, 2016).
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*
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3rd-party lab tested for purity & potency
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
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. 3rd-party tested. Clinically Studied Ingredients — NIH/PubMed!*
