Immunity+ Advanced

Highly absorbable quercetin with vitamins C & D for everyday immune support

250mg Quercefit® – a highly bioavailable form of quercetin
With vitamins D and C for additional immune support
Up to 20x more absorbable than standard quercetin
Backed by more than 10 human studies
Each capsule equivalent to 5,000mg of standard quercetin powder
Formerly Quercetin+ – same active. Subscribe from £20/month

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What is quercetin?

Quercetin is a natural plant compound – a flavonoid – found in many everyday fruits and vegetables, including onions, apples, berries and leafy greens. Quercetin is highly valued for its antioxidant, anti-inflammatory and immune-supporting properties

But standard quercetin isn’t easy for the body to absorb. Taking even a large amount of ordinary quercetin powder may deliver relatively little support where it’s needed. That’s the problem Immunity+ Advanced is designed to solve.

Quercefit® – up to 20x more bioavailable

Immunity+ Advanced uses Quercefit®, a quercetin phospholipid complex that combines quercetin (from the flowers of the Japanese Pagoda tree) with sunflower lecithin. In a human clinical study, Quercefit® was shown to make quercetin up to 20 times more absorbable than standard quercetin (Riva, A. et al., Eur J Drug Metab Pharmacokinet, 2019).

Each single capsule delivers the equivalent of 5,000mg of standard quercetin powder, to give an effective, well-absorbed dose without having to take a large amount.

Why vitamins C and D?

Immunity+ Advanced pairs highly bioavailable quercetin with two vitamins important for your immune health:

Vitamin C (80mg, 100% NRV) – contributes to the normal function of the immune system and helps to protect cells from oxidative stress. 

Vitamin D (5µg, 100% NRV) – contributes to the normal function of the immune system and helps to maintain healthy bones and muscles. Sourced from lichen, it’s suitable for vegans. 

Is Immunity+ Advanced right for you?

Immunity+ Advanced is for anyone looking for highly absorbable quercetin with immune-supporting vitamins, particularly if:

  • You want to support your immune system, especially through the seasons when it’s under more pressure
  • You’re looking for a form of quercetin with 20x higher bioavailability than standard quercetin, proven by a human clinical study (Riva A. et al., Eur J Drug Metab Pharmacokinet, 2019)
  • You want quercetin paired with vitamins C and D in one daily capsule
  • You want a quercetin supplement suitable for a vegan or vegetarian diet

Please note: Immunity+ Advanced supports immune health as part of a balanced diet and healthy lifestyle. If you are pregnant, breastfeeding, taking any medication or under medical supervision, consult a doctor or pharmacist before use.

Cambridge science

Formulated by our science team in Cambridge, UK

Premium grade ingredients

20x more absorbable Quercefit® quercetin with vitamins C and D

300,000+ Customers

Trusted by over 300,000 people across the UK

Trustpilot ★★★★★

Rated Excellent

“With quercetin, absorption really matters. That’s why we use Quercefit®, with clinically proven high bioavailability, combined with vitamins C and D to provide a well-rounded formula for everyday immune support.”

Miriam Ferrer, PhD – Head of Product Development

Ingredient highlights

Quercefit® makes quercetin up to 20x more absorbable

Quercetin is a natural flavonoid antioxidant found in fruits and vegetables such as onions, apples and berries – but it’s poorly absorbed in its standard form. 

Immunity+ Advanced uses Quercefit®, a quercetin phospholipid complex, which combines quercetin from the Japanese Pagoda tree (Sophora japonica) with sunflower lecithin. This makes it easier for the quercetin to pass through the gut and into your bloodstream.

In a human clinical study, Quercefit® was shown to make quercetin up to 20 times more absorbable than standard quercetin (Riva, A. et al., Eur J Drug Metab Pharmacokinet, 2019).

Each capsule provides 250mg of the Quercefit® complex (of which 85mg is quercetin, equivalent to 5,000mg of standard quercetin powder, in a single, well-absorbed daily capsule.

Vitamins C & D – the immune foundation

Immunity+ Advanced pairs quercetin with two vitamins central to immune health. Vitamin C (80mg, 100% NRV) contributes to the normal function of the immune system and to the protection of cells from oxidative stress.

Vitamin D (5µg, 100% NRV) contributes to the normal function of the immune system and to the maintenance of normal bones and muscle function. The vitamin D comes from lichen, making it suitable for vegans.

Quercefit® makes quercetin up to 20x more absorbable

Quercetin is a natural flavonoid antioxidant found in fruits and vegetables such as onions, apples and berries – but it’s poorly absorbed in its standard form. 

Immunity+ Advanced uses Quercefit®, a quercetin phospholipid complex, which combines quercetin from the Japanese Pagoda tree (Sophora japonica) with sunflower lecithin. This makes it easier for the quercetin to pass through the gut and into your bloodstream.

In a human clinical study, Quercefit® was shown to make quercetin up to 20 times more absorbable than standard quercetin (Riva, A. et al., Eur J Drug Metab Pharmacokinet, 2019).

Each capsule provides 250mg of the Quercefit® complex (of which 85mg is quercetin, equivalent to 5,000mg of standard quercetin powder, in a single, well-absorbed daily capsule.

Vitamins C & D – the immune foundation

Immunity+ Advanced pairs quercetin with two vitamins central to immune health. Vitamin C (80mg, 100% NRV) contributes to the normal function of the immune system and to the protection of cells from oxidative stress.

Vitamin D (5µg, 100% NRV) contributes to the normal function of the immune system and to the maintenance of normal bones and muscle function. The vitamin D comes from lichen, making it suitable for vegans.

Trusted by thousands

Explore our customer stories

Ray M.

I maintain good energy levels

This is my go to product as I find that I maintain good energy levels through its daily use,

Elaine M

I've found it gives me extra energy

My husband and I take it I've found it gives me extra energy and my husband takes it as he is on Stations which are known to deplete Q10 in the body

Mr Hardwick.

They have helped to keep my blood pressure down.

Been on these tablets for a few years now and they have helped to keep my blood pressure down.

Robert N.

Do seem to have more energy

Bought this for my wife in hope that it would help her memory but decided not to give it as not sure about her other tablets so taking myself not sure if it is having any effect but do seem to have more energy so will keep taking for a while.

FAQs

When will I feel the benefits?

Getting started

From the first capsule, Immunity+ Advanced begins delivering highly absorbable quercetin – up to 20 times more absorbable than standard quercetin, thanks to the Quercefit® phospholipid complex – alongside vitamins C and D at 100% of your daily requirement.

Quercetin is a dietary antioxidant that your body is not usually able to absorb well, so this highly bioavailable form gives you a meaningful daily dose from the start. From day one, the vitamins C and D are contributing to the normal function of your immune system and the protection of your cells from oxidative stress.

When will I feel the benefits?

Consistent support

By the second month, Immunity+ Advanced has become a settled part of your day, providing a steady daily supply of well-absorbed quercetin plus immune-supporting vitamins C and D.

Immune support works best as an ongoing, everyday habit rather than something you reach for only when you feel run down – so consistency pays off. The vitamins C and D continue their daily contribution to your immune function and antioxidant protection, while the Quercefit® quercetin provides a reliable, well-absorbed dose each day.

When will I feel the benefits?

Year-round resilience

Immunity+ Advanced is designed as an ongoing, year-round way to support your immune health and overall wellbeing – not a short course. By month three you have an established daily routine delivering highly absorbable quercetin alongside vitamins C and D.

Your immune system works hardest at certain times of year, so keeping this support consistent day after day is how Immunity+ Advanced is intended to work – a simple, once-a-day foundation for year-round resilience, whatever the season.

Enjoy the support of Immunity+ Advanced for less than 72p a day – with our 28-day subscription plan

100% satisfaction guarantee – If you're not happy, we'll give you a full refund. Free UK delivery. Cancel or amend your subscription at any time.

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