CDQZ™ Immune Support is ideal if you:
- Want a daily immune support routine that’s simple and trustworthy
- Feel tired, run down, or under pressure and want extra nutritional reinforcement
- Prefer clean, ethical, transparent supplements with no unnecessary extras
- Are looking to stay resilient during seasonal changes, travel, or stressful periods
Whether you’re seeking everyday nutrient support or want to feel more resilient during cold and flu seasons, CDQZ™ offers a simple, thoughtful way to help nourish your body’s natural defences.
CDQZ Immune Support is a thoughtfully crafted daily immune-support supplement made with four well-chosen nutrients:
Quercetin, Vitamin C, Vitamin D3 and Zinc. Each ingredient works together in harmony to provide broad-spectrum nutritional support for your immune system and overall resilience.
Made in the UK, vegetarian-friendly, and free from artificial colours, flavours, preservatives, or sweeteners, it’s a clean formula you can feel good about taking every day.
CDQZ works through ingredient synergy - the whole is greater than the sum of its parts:
Vitamin C helps protect cells from everyday oxidative stress and supports normal energy levels, reducing tiredness and fatigue.
Vitamin D3 plays a role in immune regulation and vitality - especially useful when sunlight is limited.
Zinc contributes to healthy immune messaging within cells, helping your body respond to daily challenges.
Quercetin, a plant flavonoid, acts as a natural ionophore - helping zinc reach the places it needs to be and providing antioxidant support.
Together, these nutrients offer gentle everyday support that helps keep your immune system running smoothly and your cells shielded from oxidative strain.
Serving Size: 1 capsule
Active Ingredients:
Vitamin D3 (as Cholecalciferol 2500IU)
Amount per serving: 62.5µg
%RI: 1250%
Vitamin C (as Ascorbic acid)
Amount per serving: 400mg
%RI: 500%
Zinc (as Zinc Sulphate)
Amount per serving: 15mg
%RI: 150%
Quercetin 95%
Amount per serving: 250mg
%RI: **
Inactive Ingredients:
Magnesium Stearate, Hypromellose Capsule (Vegetable Capsule).
CDQZ™ is designed for flexible, science-inspired immune support.
Your ideal dosage depends on whether you’re maintaining wellness daily or giving your body extra support when needed.
Daily Support (Prophylaxis / Maintenance):
Take 1 capsule once daily with food.
This provides a balanced level of Vitamin C, D3, Zinc and Quercetin to help maintain normal immune function and antioxidant protection.
Enhanced Support (Short-Term / Intensive Use):
If you’re feeling run down, travelling, or under additional immune stress, you may take 2 capsules per day, spaced out with meals (morning and evening).
This “intensive support” routine aligns with protocols developed by integrative physicians such as Dr. Vladimir Zelenko, who advocated combining Vitamin C, D3, Zinc and Quercetin for synergistic immune benefits.
This product is a food supplement - not a medicine. It is not intended to diagnose, treat, cure, or prevent any disease.
General Tips
Always take with a meal for optimal absorption. Stay well hydrated throughout the day. For ongoing wellbeing, continue daily use or as advised by your healthcare provider.
A note on Vitamin D3 and co-factors
Vitamin D3 relies on other nutrients for its normal metabolism. Magnesium is involved in activating vitamin D, while vitamin K2 (MK-7) is commonly discussed in relation to calcium regulation when vitamin D is used long term.
For this reason, vitamin D3 is best considered as part of a broader nutritional approach. Ensuring adequate magnesium and vitamin K2 intake - through diet or supplementation - may help support nutrient balance alongside regular use of CDQZ™.
Please find below relevant papers:
- Zelenko Protocols: COVID-19 Prophylaxis and Treatment
- The role of micronutrients (quercetin, vitamins C and D, zinc) in the treatment and prevention of ARVI
- COVID-19: Poor outcomes in patients with zinc deficiency
- Possible Therapeutic Effects of Adjuvant Quercetin Supplementation Against Early-Stage COVID-19 Infection: A Prospective, Randomized, Controlled, and Open-Label Study
- Quercetin and Its Anti-Allergic Immune Response
- Zinc supplementation in children with asthma exacerbation
Food supplements should not be used as a substitute for a varied diet. CDQZ does not prevent, treat, or cure diseases. If you have food allergies, are pregnant, breastfeeding, taking prescribed medication, or have a medical condition, please consult your doctor before use. Do not exceed the stated recommended dose. Store below 25 °C in a dry place. Keep out of reach of children and pets.
FAQs
CDQZ Immune Support is a carefully balanced blend of key nutrients including Vitamin C, Vitamin D3, Zinc and Quercetin, formulated to support your immune system and general wellbeing. These ingredients work together to help your body stay resilient and maintain normal immune function all year round.
Vitamin D3 helps your body absorb calcium, but for that process to run smoothly, your body also needs magnesium and Vitamin K2. Magnesium supports the conversion of Vitamin D into its active form. Vitamin K2 helps ensure calcium is directed into your bones and teeth, not into soft tissues.
For this reason, many people choose to take magnesium and K2 alongside CDQZ Immune Support to achieve a more complete nutritional balance.
Yes - CDQZ Immune Support is designed for regular use. It can be taken all year round, though it’s especially helpful during the colder, darker months when your body may produce less Vitamin D naturally. Always follow the suggested use on the label.
Take CDQZ Immune Support with a main meal that includes a small amount of healthy fat (like avocado, olive oil, nuts, or eggs). This helps your body absorb the fat-soluble nutrients such as Vitamin D3 more effectively. Try to take it at roughly the same time each day for consistency.
Yes, you can. CDQZ Immune Support is formulated to complement a balanced supplement routine. If you’re already taking magnesium or Vitamin K2, continuing them alongside CDQZ can help ensure your body makes the best use of Vitamin D3. If you’re unsure about combining supplements, it’s always sensible to speak with your healthcare professional.
CDQZ Immune Support is well-tolerated when used as directed. Taking too much Vitamin D3 without enough magnesium or K2 may affect calcium balance, so it’s important not to exceed the recommended intake. If you have a medical condition, take prescription medication (especially blood thinners), or are pregnant or breastfeeding, please consult your healthcare provider before use.
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