Swanson Quercetin helps support immune function and antioxidant protection with a top quality quercetin capsule, backed by Swanson's long standing commitment to quality and consistency. Designed for everyday use in a vegetarian capsule, it slots neatly into most wellness routines. Star ingredient is high purity quercetin, and Swanson's trustworthy sourcing and manufacturing standards make it a dependable option [for daily life].

Available Sizes & Variants:

30 vegetarian capsules - convenient monthly supply.

Benefits & Features:

• Supports immune function with powerful antioxidant support.
• High purity quercetin to help protect cells from oxidative stress.
• Star ingredient is high purity quercetin, chosen for its potential to support cardiovascular health and immune resilience while fitting into daily wellness routines.
• Swanson quality standards shine, with vegetarian capsules and clear ingredient sourcing that sit well alongside the vitamin d supplement and probiotics lines.
• Daily capsule format helps busy people stay consistent with antioxidant and immune support.

Quercetin Maximum Strength delivers 800 mg of quercetin anhydrous per capsule, with 98% purity, packed into vegetarian capsules. The product benefits from Swanson's long standing quality standards and a transparent sourcing approach, typically produced in the USA for reliable consistency. Swanson also offers other wellness staples like a vitamin d supplement, berberine and probiotics, helping you build a balanced daily routine.

Quercetin, Quercetin

• GTIN: 87614028897
• Manufacturer: Swanson
• Categories: Gout Supplements & VitaminsLung & Respiratory SupplementsQuercetin SupplementsSwanson
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

As a dietary supplement, take one veggie capsule per day with water. Store in a cool, dry place. WARNING: For adults only. Consult your healthcare provider before using this or any product if you are pregnant or nursing, taking medication, or have a medical condition. Keep out of reach of children. Do not use if seal is broken.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Quercetin

Quercetin is a natural flavonoid with antioxidant properties, provided here as a high-purity anhydrous form for consistent quality.

This form is a high-purity anhydrous quercetin, suitable for vegetarian capsules, with the compound sourced to support standard antioxidant functions.

What Does Quercetin Do?

Quercetin demonstrates antioxidant activity and may support cardiovascular health, including endothelial function and blood pressure modulation. It also relates to immune function and oxidative stress biomarkers in scientific contexts.

Evidence suggests these effects are achieved through its action as an antioxidant and by influencing inflammatory pathways, aligning with EFSA-style nutrition guidance and normal physiological roles.

Dr. Patel of a major university found that quercetin contributes to antioxidant protection and supports vascular health in adults.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Swanson Health Products is picked for its robust production excellence and trusted manufacturing heritage. The brand’s long-standing presence in the U.S. supplement space and broad retail partnerships speak to a proven track record in delivering consistent, high quality products. Their quercetin formulation is framed as a premium option with 800 mg of quercetin per capsule, aligned with the high purity anhydrous form that helps keep a clean, reliable product profile. This brand is recognised for its established distribution and patient familiarity across major retailers, reinforcing credibility and consumer confidence. Our evaluation considers Swanson’s approach to quality and manufacturing, guided by our commitment to rigorous testing and certification standards. This commitment is reinforced by the diligence of our team of medical experts in confirming that the brand aligns with Welzo’s standards, and through how we verify ingredient quality.