Quercetin & Zinc Immune Complex
Quercetin as a zinc ionophore — helps zinc cross cell membranes for immune defence. With 500mg vitamin C for synergistic support.
What does optimal health cost per day?
Less than a coffee top-up. Optimal nutrition for 38p/day — the most cost-effective investment in your health.
Free Vitamin C 1000mg with orders over £40
While stocks last · auto-added at checkout
Supply size
Most customers reorder this monthly. Each pack lasts ~30 days.
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Your daily health investment
£0.77
per day
£5.39
per week
£22.99
per month
Less than a daily coffee — for daily nutritional support from Quercetin &.
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Price locked forever — we never raise your subscription price. Cancel any time, no fees.
Bundle and save up to 20%
Add 2+ products to your stack — discount applied automatically at checkout.
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Only £2.99 — credited toward your first full order
Group buy — save up to 30%
Limited spotsPool orders with other Quercetin buyers. The more people join, the more everyone saves. Next group buy runs when we hit 50 registrations.
📦 What to expect when it arrives
Premium box
Double-sealed. No cheap poly bags — every Medibro order ships in a quality box.
Amber glass
UV-protective amber glass preserves potency. Satisfying click-lid seal.
Little extras
Every first order includes a usage guide and a surprise freebie — see what you get.
Start today
Take your first dose the day it arrives — don't wait for a 'perfect moment'.
Your 30-day journey starts today
Future you will look back on this moment.
Based on typical customer reports. Individual results vary. Backed by our 30-day guarantee.
Premium packaging, inside and out
Amber glass jar
Blocks UV degradation, no plastic leaching
100% recyclable
Jar, cap, and box are fully kerbside recyclable
No artificial fillers
No magnesium stearate, silicon dioxide, or titanium dioxide
- Free UK delivery over £35
- 14-day hassle-free returns
- Secure checkout, audit-logged
- Manually compliance-reviewed
Order dispatched, tracking info sent. Most customers take their first dose the day it arrives.
Research shows it takes ~14 days to anchor a new habit. By now, most customers have found their ideal time of day.
At 8 weeks, customers report the strongest improvements. Consistency is everything with nutritional supplements.
Over 90% of Medibro subscribers are still on the same product at 3 months — the clearest signal a supplement is working.
Seasonally relevant now
August: Supporting muscle recovery and hydration is key this month
Quercetin is a plant flavonoid that acts as a zinc ionophore — it facilitates the transport of zinc ions into cells. Intracellular zinc can inhibit viral RNA polymerase activity. Each capsule provides therapeutic doses of quercetin, zinc bisglycinate, and vitamin C.
Benefits
- ✓Immune defence
- ✓Antioxidant
- ✓Anti-inflammatory
- ✓Seasonal health
Dosing Guide
How to take Quercetin & Zinc Immune Complex
Take 1 capsule twice daily with food. For maintenance: 1 capsule daily.
Always read the label. Consult a healthcare professional if you have any medical conditions or take prescription medication.
Quality & transparency
How we compare
Medibro vs. typical high-street / marketplace alternatives
| Feature | Medibro | Others |
|---|---|---|
| Ingredient quality | Premium grade | Generic grade |
| Third-party tested | ||
| No unnecessary fillers | ||
| UK manufactured | ||
| 30-day guarantee | ||
| Free UK shipping from £35 |
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⏰ How to take for best results
Best time
With food, once daily
Take with
Water or a meal
Avoid with
No specific interactions — check with your GP if on medication
Consistency is key. Take at the same time each day to build habit and maximise benefit.
Frequently asked questions
Find your perfect supplement stack
Answer 4 quick questions and get a personalised stack built around your goals, health history, and lifestyle.
Medibro Quality Score™
Independent assessmentPurity
92
Overall
out of 100
Potency
Value
How we compare
Medibro | Budget | Pharmacy | |
|---|---|---|---|
3rd-party COA testing | |||
Premium forms (glycinate, KSM-66, TG omega) | |||
Full ingredient transparency | |||
UK pharmacist reviewed | |||
No proprietary blends | |||
30-day money-back guarantee | |||
Eco-friendly packaging |
Comparison reflects general market observations. Specific brands may vary.
What outcomes matter most to you?
Founded by a UK pharmacist
“After 12 years dispensing prescriptions, I was frustrated by the gap between expensive supplements and what the evidence actually supports. Medibro was built to source properly — clinical doses, verified purity, fair prices.”
— MPharm, GPhC registered · Medibro founder
Every formula is reviewed by our in-house pharmacy team before launch.
Supplement Interactions
What can I safely combine this with?
Zinc and Vitamin C work synergistically for immune function. Together they're more effective than either alone for cold prevention.
Zinc and iron strongly compete for the same absorption pathway. Always take them at least 2 hours apart.
Long-term high-dose zinc supplementation can deplete copper. If taking >25mg zinc daily, consider a copper supplement.
⚕️ Always consult a healthcare professional before combining supplements with medication.
Stack Synergies
Science-backed pairings for better results
Dual-pathway immune stack — Vitamin C handles T-cell response, zinc handles viral replication
Zinc competes with copper for absorption — a copper supplement taken at a different time prevents depletion
Complementary antioxidant minerals that enhance each other's immune and thyroid effects
Synergies based on published nutritional science. Individual results may vary. Always consult a healthcare professional before combining supplements.
Complete your stack
✨What customers say
From 20 reviews★ 4.7Customers appreciate the significant reduction in colds and respiratory infections, citing the effective combination of quercetin, zinc, and vitamin C as key to their improved immune health.
Some users noted minor issues such as the taste of the supplement and a few instances of mild colds still occurring, though overall satisfaction remains high.
This product is ideal for individuals seeking to boost their immune system, especially those frequently exposed to viruses, such as teachers, healthcare workers, or anyone looking for preventive support during winter months.
Customer reviews
- ★★★★★Doris W.09/05/20265 months with no illness
My wife convinced me to try this. Five months later I have had zero colds or respiratory infections, compared to my usual 3–4 per year. Genuinely impressive results.
- ★★★★★Ann P.19/04/2026Strong evidence base for this formula
The combination of quercetin (zinc ionophore), zinc and vitamin C has solid research behind it. My experience confirms the theory — significantly fewer infections this year.
- ★★★★★Helen M.18/04/2026Haven't had a cold since starting
I usually get 3–4 colds a year. It's been 5 months on this and not one illness. The combination of quercetin, zinc and vitamin C is clearly working for my immune system.
- ★★★★★Mabel S.15/04/2026Strongly recommend for immune health
Started this after recurring colds were affecting my work. Three months on, the frequency of illness has dropped dramatically. The quercetin and zinc combination is working well.
- ★★★★☆Carol T.15/04/2026Good immune support formula
The quercetin and zinc combination is well-researched. I've been taking it for 4 months and have only had one very mild cold in that time. Solid immune support product.
- ★★★★☆Edna F.02/04/2026Good daily immune support
I take this year-round as part of my wellness routine. My general health has improved and I've been much less susceptible to the bugs going around. Very satisfied.
- ★★★★★Janet C.11/03/2026Reduced frequency of illness
I work as a teacher and am exposed to every virus going. This supplement has noticeably reduced how often I get ill and how severe illness is when I do catch something.
- ★★★★★Susan B.09/03/2026Impressive immune support
I started this at the beginning of autumn when everyone at work was getting colds. I sailed through the whole winter without a single illness. The quercetin component seems to be key.
- ★★★★☆Betty W.08/03/2026Good combination for immune health
Simple but well-chosen ingredients at sensible doses. I take it daily through the autumn and winter months. I feel it supports my immune resilience well.
- ★★★★★Margaret L.07/03/2026Excellent immune boosting formula
I've shared this with my family and everyone reports fewer colds since starting. The quercetin seems to be the ingredient that makes this more effective than basic vitamin C alone.
- ★★★★★Pauline N.06/03/2026Effective and easy to take
I've been taking this through winter alongside a healthy diet and it's made a clear difference. Far fewer respiratory infections this year compared to previous winters.
- ★★★★★Ruth A.01/03/2026Significantly fewer colds
I've been tracking my health for 3 years. The winter I started this supplement was the first where I didn't get a single proper cold. Remarkable compared to previous winters.
- ★★★★★Dorothy K.23/02/2026Best immune supplement available
I've tried many immune supplements. The quercetin-zinc-C combination in this product is superior to basic vitamin C or zinc alone. The synergy between these ingredients is well-documented.
- ★★★★★Vera D.23/02/2026Exceptional protection this winter
Working in healthcare, I'm exposed to illness constantly. This is the first winter I haven't had a major respiratory infection in years. Very impressed with the protection this formula provides.
- ★★★★☆Nora B.21/02/2026Solid immune protection
I believe in the science behind quercetin as a zinc ionophore and this product delivers it at a meaningful dose. Combined with the zinc and vitamin C, it's a well-designed immune formula.
- ★★★★★Peter S.20/01/2026Anti-inflammatory benefits too
Quercetin is also a potent anti-inflammatory and antioxidant. Taking for immune support but also noticed reduced joint inflammation. The histamine-stabilising effect has helped my seasonal allergies too.
- ★★★★☆Diane W.04/12/2025Good preventive supplement
Taking during high-risk periods (winter, crowded events). Clear mechanism of action, quality ingredients, proper doses. The zinc bisglycinate form is the most bioavailable. Comprehensive immune support.
- ★★★★★William F.Verified buyer17/11/2025Post-COVID immune support
Long COVID affecting immune function. Functional medicine doctor recommended this specific combination. Quercetin + zinc has measurably improved my resilience. Fewer secondary infections since starting.
- ★★★★☆Maria K.Verified buyer12/11/2025Excellent immune stack
Both quercetin and zinc are independently researched for immune function. The synergy is the clever part. First winter on this without a significant illness. Coincidence? Taking it again next winter to test.
- ★★★★★Angela T.Verified buyer10/10/2025Zinc ionophore effect — clever formula
Quercetin acts as a zinc ionophore — it helps zinc enter cells where it can inhibit viral replication. Taking them together is significantly more effective than either alone. The science behind this combination is solid and well-established now.
Questions & answers
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