Country Life Quercetin plus D3 is a handy two in one supplement that supports immune health and cellular wellbeing, thanks to quercetin and vitamin D3 working together. This two in one formula pairs quercetin with vitamin D3 for practical daily immune support. Country Life brings decades of trust, quality controls, and integrity to every capsule.

Available Sizes & Variants:

90 Vegetarian Capsules - convenient daily dose in easy-to-swallow capsules.

Benefits & Features:

• Daily immune support comes from this capsule.
• Quercetin 500 mg from dihydrate provides antioxidant support for everyday wellbeing.
• Vitamin D3, provided as cholecalciferol, helps support immune health and cellular function, especially when daily sunlight is limited, making this a practical daily staple for many.
• Certified gluten free, vegetarian, and kosher, with clean ingredients and minimal excipients.
• Country Life's pledge of integrity means transparent sourcing and robust quality controls.

Country Life, founded in 1971, brings a long standing commitment to integrity. Quality matters. The quercetin active is supplied as quercetin dihydrate and paired with vitamin D3 from lanolin in a gluten free, vegetarian, kosher product. Manufactured in a GMP registered facility, it uses minimal excipients and excludes artificial additives. The brand runs on wind power and ships in recyclable packaging. Trust in every capsule. This trusted combination supports immune system booster benefits and cellular wellbeing with straightforward, reliable quality you can feel.

Other Ingredients - Cellulose (capsule shell), cellulose, magnesium stearate, silica.
Free From - Gluten, yeast, wheat, corn, soy, milk, salt, sugar

• GTIN: 15794016243
• Manufacturer: Country Life
• Categories: Best SellersCountry LifeGout Supplements & VitaminsLung & Respiratory SupplementsNew ArrivalsQuercetin SupplementsSubscribe & Save Products
• 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.

Adults should take one capsule daily, ideally with a meal that contains fat.

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

The Active Ingredient Is: Vitamin D3 (Cholecalciferol)

Vitamin D3, or cholecalciferol, is a fat-soluble vitamin essential for normal immune function and cellular health.

This form is sourced as cholecalciferol from lanolin, providing a bioavailable form suitable for daily use. The formula also includes quercetin, which supports immune function and cellular health in combination with Vitamin D3.

What Does Vitamin D3 Do?

Vitamin D3 helps regulate immune function and modulates both innate and adaptive immune responses, contributing to normal immune health.

Dr. Martineau of University of Oxford found that Vitamin D3 reduces the risk of acute respiratory infections in certain populations, supporting its role in immune support in line with EFSA considerations.

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

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.

Country Life brings a long-standing track record of production excellence that makes it Welzo’s trusted choice for this supplement. Founded in 1971, the brand is recognised for its commitment to product integrity, transparency and clean formulations, backed by certifications for gluten-free and vegetarian products and a Certified B Corporation status that reflects high standards of social and environmental responsibility. The manufacturer’s reputation for robust quality controls and authenticity under its Pledge of Integrity underpins our confidence in this partnership, and their sustainable practices, including wind-powered production and recyclable packaging, reinforce the brand’s responsible approach.

This product combines quercetin with vitamin D3 to provide synergistic immune system support and cellular health, aligning with Country Life’s emphasis on purity and minimal excipients. Our team of medical experts has evaluated the brand for compliance with strict quality and safety standards, and you can learn more about our team of medical experts as well as our rigorous testing protocols.

We recommend Country Life Quercetin + D3 as a well‑established, quality‑driven option that embodies consistent manufacturing excellence and clear product integrity.