Quercetin realistically strengthens immune resilience and heart health with a potent quercetin blend, and Swanson's reliable GMP-guided production and vegan capsules highlight quality. Each capsule is plant-based and gluten free, aligned with non-GMO standards and Swanson's pledge to clear, transparent formulation. This everyday choice feels dependable and supports your body's natural defenses and vascular wellbeing.

Available Sizes & Variants:

Veggie Capsules - high potency quercetin for daily immune support and cardiovascular wellness.

Benefits & Features:

• Helps immune health day by day to stay resilient against seasonal challenges.
• Supports heart health by helping blood vessel function and steady blood flow
• Delivers antioxidant protection to help defend cells against oxidative stress
• A handy daily capsule for vegan and gluten free lifestyles, nice and simple
• Quercetin stays the star ingredient for many shoppers chasing steady immune support and cardiovascular balance, quickly and easily fitting into daily routines with a high potency blend

Swanson has a long standing legacy of clear, affordable wellness. The product uses plant-based capsules and is made under GMP guidelines, with gluten free and non-GMO labeling for peace of mind. Each capsule delivers 475 mg of quercetin, a bioflavonoid recognised for its antioxidant prowess. Swanson is known for straightforward, customer friendly policies and clear product information, helping shoppers feel confident in a staple antioxidant they can trust day after day.

Other Ingredients - Hypromellose (vegetarian capsule), microcrystalline cellulose, magnesium stearate, silica.

• GTIN: 87614116716
• Manufacturer: Swanson
• Categories: Gout Supplements & VitaminsLung & Respiratory SupplementsNew ArrivalsQuercetin 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.

Take one vegetable capsule with water once or twice daily as a dietary supplement.

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

The Active Ingredient Is: Quercetin

Quercetin is a bioflavonoid with potent antioxidant activity and a role in supporting normal immune function. This formulation presents quercetin in a vegan, gluten-free capsule for easy integration into a plant-based lifestyle. The product is non-GMO and manufactured under standard quality controls.

This section describes quercetin in its common supplement form and how it aligns with typical plant-based ingredient sourcing and quality practices.

What Does Quercetin Do?

Quercetin helps maintain normal immune function and supports cardiovascular health through healthy vascular activity and reducing markers of inflammation, consistent with EFSA and NHS considerations for nutrient function. Dr. D'Andrea of the University of Bari noted its antioxidant effects in human studies.

It also contributes to overall antioxidant protection, with evidence suggesting immune and vascular support as part of a balanced diet and lifestyle.

Dietary supplements are not a replacement for a balanced diet. Do not take more than the recommended amount. Keep in a cool, dry area away from light and heat. Ensure they are out of children's reach and view.

Why Swanson Quercetin is Welzo Selected

Swanson aligns with Welzo's partner criteria through a long-standing reputation for affordable, quality supplements and a commitment to safety. The brand manufactures under FDA GMP guidelines, reinforcing our confidence in consistency and purity, while ingredient quality verification further supports transparency across their line. Swanson also offers vegan capsules that are gluten-free and Non-GMO, reflecting a broad quality standard that Welzo values.

This brand stands out in our evaluation for its established heritage and clear emphasis on trusted manufacturing practices. Our expert team of doctors, nurses, and nutritionists reviews brands for compliance with the certifications we require, and Swanson meets those standards with visible process controls and accessible formulation transparency. For this specific product, the high-potency quercetin focus matches Welzo's emphasis on potent, well-documented ingredients that are suitable for vegan capsules.

Choosing Swanson for this quercetin supports a brand-product match that emphasises quality, accessibility, and safety, delivering an evidence-aligned experience for customers seeking immune and cardiovascular wellness support.