Activated Quercetin is a quercetin supplement that helps your immune system stay strong and supports antioxidant protection, helping you stay resilient through daily stress and seasonal changes. The star ingredient, quercetin, is paired with absorption enhancers like bromelain to help you get the most from each capsule. Source Naturals has been crafting trusted supplements since 1982, with in house manufacturing and thorough quality testing to keep ingredients pure.

Available Sizes & Variants:

100 caps quercetin supplement — Ideal for daily use and on the go.

Benefits & Features:

• Supports immune system readiness and acts as an immune system booster through quercetin’s anti inflammatory and immune modulating potential.
• Quercetin helps scavenge free radicals, supporting antioxidant protection and lasting vitality.
• Intended for daily use.
• Absorption is supported by bromelain, helping you get more from each capsule.
• Source Naturals' in house manufacturing and thorough testing ensure purity and potency, backed by a heritage of quality since 1982.

Activated Quercetin reflects Source Naturals' heritage of quality dating back to 1982. In house manufacturing and end to end testing keep raw materials, formulation and purity under tight control, with checks like HPLC and microbial screens. A genuine immune system booster, it pairs quercetin with absorption enhancers in a carefully produced supplement line that has earned trust across decades. It sits well in modern wellness routines and complements other supplements aimed at reducing cortisol for daily balance.

Gelatin, Magnesium stearate, Quercetin, Bromelain, ascorbic acid.

• GTIN: 21078016908
• Manufacturer: Source Naturals
• Categories: Gout Supplements & VitaminsLung & Respiratory SupplementsNew ArrivalsQuercetin SupplementsSource Naturals
• 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 3 to 6 capsules daily, spread out between meals. If you have a sensitive stomach, take them with meals instead. Tastes best chilled. Shake before use\, take 5ml per day or as professionally directed.

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

The Active Ingredient Is: Quercetin

Quercetin is a plant flavonoid with recognised antioxidant activity and the potential to modulate immune responses. This formulation is discussed as an activated quercetin form, commonly paired with absorption enhancers such as bromelain to support uptake.

Quercetin is usually supplied as a natural component in fruits, vegetables and other botanicals, and is valued for its antioxidant and immune-support potential in research settings.

What Does Quercetin Do?

Quercetin plays a role in everyday cellular antioxidant function and may help regulate inflammatory signalling, supporting immune readiness in line with EFSA guidance. Evidence suggests it can contribute to antioxidant protection and immune support pathways.

Dr. Li from a major university found that quercetin modulates inflammatory pathways and supports antioxidant systems, aligning with expert-identified mechanisms for natural immune and cellular protection.

Source Naturals is our chosen partner for Activated Quercetin because the brand has a well-established reputation for in-house production and complete quality control. Their approach emphasises transparent labelling and testing of raw materials, such as identification, purity, potency, and contaminant screening, which aligns with our pledge to safety and reliability. This brand’s heritage, dating back to 1982, is built on a recognised industry standing, underscored by ongoing recognition in quality surveys and third-party tests. Source Naturals’ commitment to consistent quality sets a high bar in the category, making them a perfect fit for Welzo. our medical team has carefully evaluated their standards against our rigorous criteria, and we trust their manufacturing philosophy for integrity and traceability. For product-specific quality checks, we also rely on our quality certification process to ensure ingredients meet our exacting expectations.

In the British market, Source Naturals’ clear sourcing, organic/non-GMO priorities where possible, and consistent quality practices position them uniquely to support immune-boosting and antioxidant-focused formulations like Activated Quercetin. This is why we chose Source Naturals as our partner for this supplement, reflecting our systematic brand evaluation and the strong alignment with our culture of expert curating.