Every autumn, the UK rolls out its annual flu vaccine programme to protect vulnerable groups and reduce pressure on the NHS. In 2025, the flu jab remains an essential tool against seasonal flu — but it’s not the only way to strengthen your defences.
Alongside vaccination, optimising your nutrition with a comprehensive multivitamin like TRINITY can help ensure your immune system has the nutrients it needs to function at its best.
🧬 Flu Vaccine UK 2025: Eligibility
The NHS flu vaccination programme runs every autumn and winter. In 2025, those eligible include:
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Everyone aged 65 and over
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Pregnant women
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People with long-term conditions (e.g. diabetes, heart disease, chronic respiratory illness)
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Children aged 2–16 (nasal spray in most cases)
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Frontline health and social care workers
👉 Direct Answer: In 2025, the NHS flu vaccine is available free for adults 65+, pregnant women, children 2–16, those with long-term conditions, and health/social care workers.
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🤔 Why Nutrition Still Matters During Flu Season
The flu jab helps prevent infection and serious illness from specific influenza strains. But the immune system is complex — it requires daily nutritional support to produce antibodies, regulate inflammation, and recover from viral stress.
Nutrients most at risk of deficiency in the UK winter include:
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Vitamin D₃ – produced in the skin via sunlight, but almost all adults in the UK are deficient during winter months
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Vitamin C – supports white blood cell activity and antioxidant defence
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Zinc – vital for immune signalling and wound healing
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Selenium – essential for viral defence and thyroid function
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B-complex vitamins – fuel immune cell energy and regulate stress response
Even if you’re vaccinated, nutrient gaps can leave your immune system underperforming.
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🌿 TRINITY: Multivitamin Support for Winter
TRINITY is designed to work with your body’s natural rhythms, pairing compatible nutrients and avoiding clashes that block absorption.
✅ Immune-supporting nutrients: Vitamin D₃, Vitamin C, Zinc, Selenium
✅ Smart nutrient pairings: Vitamin C with Iron for enhanced absorption
✅ Time-optimised formulas: Morning B-complex for energy, night-time Magnesium Glycinate for repair
✅ No fillers, binders, or seed oils: Just clean, active ingredients
It’s the smarter way to fill nutritional gaps through the winter — especially when appetite, sunlight, and diet variety may be lower.
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❓ FAQs: Flu Vaccine UK 2025 & Nutrition
Q: Who gets the free flu vaccine in the UK in 2025?
A: Adults aged 65+, pregnant women, children 2–16, people with long-term health conditions, and frontline healthcare workers.
Q: Can supplements replace the flu jab?
A: No — vaccines protect against specific flu strains, while supplements support overall immune strength. Both are important.
Q: What vitamins help immunity in winter?
A: Vitamin D₃, Vitamin C, Zinc, and Selenium are among the most important for immune defence.
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🧠 Summary
The flu vaccine UK 2025 programme protects millions of people from seasonal influenza. But vaccines alone can’t guarantee resilience against every infection. By combining vaccination with high-quality nutrition from TRINITY, you can strengthen your immune system for flu, RSV, COVID, and beyond this winter.
