Zinc Immune & Cold Defence

Category: Immune

Zinc is essential for neutrophil, natural killer cell, and T-lymphocyte function. As a lozenge, ionic zinc directly inhibits rhinovirus replication in the nasopharynx. Multiple meta-analyses confirm zinc lozenges taken within 24 hours of cold onset reduce duration significantly.

Traditional uses & benefits

• Common cold duration and severity, recurrent infections, immune resilience

Ingredients

• Zinc (acetate or gluconate lozenge for acute cold; bisglycinate for maintenance) (10-15 mg per lozenge (acute) or 15-30mg daily (maintenance))

How to prepare

1. For acute cold: start zinc lozenges within 24 hours of first symptoms. Take one lozenge (10–15mg elemental zinc) every 2 hours while awake. 2. Use zinc acetate or gluconate lozenges — these release ionic zinc in the nasopharynx where rhinovirus replicates. 3. IMPORTANT: do NOT use zinc nasal sprays — linked to permanent loss of smell. 4. For daily immune maintenance: 15–30mg zinc with food. Long-term high-dose (above 40mg daily) can deplete copper — supplement if needed.

Why it works

Ionic zinc inhibits rhinovirus ICAM-1 binding; systemic zinc supports T-cell, NK cell, and neutrophil function

Time to effect

Immune resilience improved with 4 to 6 weeks consistent supplementation

Not right for

Not the right fit if any of these apply to you: zinc nasal spray users. When in doubt, check with your pharmacist or GP first.

When to take it

acute

Common mistakes

• Using zinc supplements (tablets) instead of zinc lozenges for colds — zinc must contact the throat mucosa directly
• Starting more than 24 hours after symptoms begin — effectiveness drops sharply after this window
• Using long-term at high doses — excess zinc depletes copper; limit acute cold protocol to 7 days
• Choosing zinc oxide form — zinc acetate or gluconate lozenges are most studied for cold viruses

Sources

• Zinc lozenges for common cold — systematic review (2012): Systematic review of 13 RCTs: zinc lozenges reduced cold duration by 33% when started within 24 hours of onset.

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*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.