Bio-Quercetin supports immune resilience with highly bioavailable quercetin, thanks to a fenugreek fibre blend that boosts absorption and mirrors Life Extension's evidence-backed approach. Active quercetin sourced from Japanese sophora and fenugreek galactomannans is included to help support immune function, cardiovascular health, and antioxidant protection. Life Extension backs GMP manufacturing, independent third-party testing, and transparent sourcing to give you real confidence.

Available Sizes & Variants:

30 vegetarian capsules – simple daily dose

Benefits & Features:

• Supports immune resilience with highly bioavailable quercetin.
• Supports heart and vessel health with antioxidant protection.
• Fenugreek fibre boosts absorption, helping quercetin work more effectively.
• Vegetarian capsules fit everyday wellness routines without hassle.
• One capsule daily gives you a daily dose of bioavailable quercetin, supported by fenugreek fibre to maximise absorption, while Life Extension's GMP manufacturing and third-party testing provide reassurance in purity.

Life Extension has built a science-led reputation over years, with GMP compliant facilities and third-party testing you can trust. Bio-Quercetin uses Japanese sophora flower bud concentrate for the quercetin source and fenugreek fibre to boost absorption, and the brand’s transparency, traceable sourcing, and commitment to non-GMO ingredients set it apart in a crowded market, and Life Extension sits alongside cherished lines like probiotics and a vitamin d supplement for overall wellness.

Quercetin phytosome (providing 10 mg quercetin from Japanese sophora concentrate (flower bud), phosphatidylcholine complex from sunflower), Quercetin phytosome (providing 10 mg quercetin from Japanese sophora concentrate (flower bud), phosphatidylcholine complex from sunflower)

• GTIN: 737870230236
• Manufacturer: Life Extension
• Categories: Best SellersGout Supplements & VitaminsLife ExtensionLung & Respiratory SupplementsQuercetin SupplementsSports Supplements Black Friday Sale
• 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 (1) capsule daily, with or without food, or as recommended by a healthcare practitioner. Store in a cool, dry place, out of reach of children. Do not exceed the recommended dose. If the outer seal is broken or damaged, do not use. Consult your physician if you are undergoing treatment for a medical condition, or if you are pregnant or lactating.

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 flavonoid with antioxidant properties and is often connected to immune support and overall vascular wellbeing. This formulation delivers highly bioavailable quercetin derived from Japanese sophora flower bud concentrate and boosted with fenugreek fibre to enhance absorption.

What Does Quercetin Do?

Quercetin helps with antioxidant activity and takes part in immune responses and endothelial function, supporting normal cardiovascular health. The fenugreek fibre blend helps maximise circulating levels of quercetin to optimise its action in the body.

This supplement isn't meant to diagnose, treat, cure, or prevent any illness at all.

Life Extension is our dependable partner for Bio-Quercetin because their production excellence and science‑led heritage set a top benchmark in the supplement market. The brand is recognised for its longstanding commitment to science‑driven formulations and clear disclosure, which aligns with Welzo's aim to offer products backed by solid science. Their GMP‑compliant production and emphasis on independent testing underpin a steady quality narrative that our customers can rely on. Life Extension's reputation for clinical research minded solutions helps separate them from other brands in the market. Our evaluation recognised their clear focus on purity, traceability, and consumer safety, supported by how they communicate ingredient sourcing and quality measures. This brand was reviewed by our expert team of doctors, nurses, and nutritionists for compliance with our quality certification process, ensuring every batch meets high standards. Their Bio-Quercetin formulation itself demonstrates strongly enhanced bioavailability via fenugreek fibre, making it especially suited for this supplement.