ingestible · for cold & flu symptom relief
Zinc Lozenges
Reviewed by the Nimbera editorial team · Last updated May 2026
How to use
Begin at first sign of symptoms - within 24 hours of onset. Dissolve one zinc acetate or zinc gluconate lozenge slowly in the mouth every 2-3 hours while awake. Do not chew or swallow whole. Total daily dose should reach approximately 80-92 mg of elemental zinc. Continue for the duration of cold symptoms, up to 14 days.
How it works
Zinc ions released locally in the throat and nasal passages interfere with rhinovirus binding to nasal epithelial cells and inhibit viral replication. Local ionic zinc in the pharyngeal region - rather than systemic zinc levels - appears to be the key mechanism, which is why dissolving slowly in the mouth is critical.
Where to buy
Pharmacies, grocery stores, and online retailers. Look for zinc acetate (e.g. Cold-Eeze) or zinc gluconate lozenges. Check the elemental zinc content on the label - many products contain 10-13 mg per lozenge.
Typical cost: $8-$15 for a box of 18-25 lozenges
Safety notes
Do not use intranasal zinc products (sprays) - these have caused permanent anosmia (loss of smell). Zinc interacts with tetracycline and fluoroquinolone antibiotics by forming insoluble chelation complexes that reduce antibiotic absorption - separate doses by at least 2 hours before or 4-6 hours after the antibiotic. Excess zinc supplementation (above 40 mg/day long-term) can impair copper absorption. Nausea on an empty stomach is common - take with food or water.
Drug & supplement interactions
- Always tell your doctor or pharmacist about any supplements you take.
- Interactions can occur with prescription medications, blood thinners, and immunosuppressants.
- Herbal remedies can affect how the body absorbs or metabolises drugs.
- Check drugs.com interactions checker before starting.
This information is compiled from primary clinical literature and is for informational purposes only. It is not a substitute for professional medical advice. Read our full disclaimer.