NutriStack
Oseltamivir and Zinc, a synergy.
Zinc supports antiviral immune function and meta-analyses show modest reductions in common cold duration with zinc lozenges. While direct trials of zinc plus oseltamivir for influenza are lacking, the mechanisms are non-overlapping and the combination is low risk for short-term use during acute illness.
One pair, every claim cited. The two substances, the type, the mechanism, the recommendation, and the primary literature.
Same shape as the other 1,729 pairs in the public database.
From the interaction database
What the row says.
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At a glance
- Substances
- Oseltamivir and Zinc
- Pair type
- Synergy
- Evidence (highest tier)
- Emerging
- Source citations
- 2 sources
- Stack Score effect
- +2 to your Stack Score (per scored synergy row).
- Scope
- Supplement × Prescription
- Last verified
- May 30, 2026
Synergy · Emerging evidence
Synergy
What is happening. Zinc supports antiviral immune function and meta-analyses show modest reductions in common cold duration with zinc lozenges. While direct trials of zinc plus oseltamivir for influenza are lacking, the mechanisms are non-overlapping and the combination is low risk for short-term use during acute illness.
Mechanism. Zinc supports innate immunity, T-cell function, and interferon response, and ionic zinc has direct antiviral activity against several respiratory viruses. Oseltamivir blocks viral neuraminidase.
Recommendation. Modest oral zinc (15-25 mg/day with food) or zinc lozenges per label for the duration of acute influenza are reasonable alongside oseltamivir. Avoid chronic high-dose zinc, which can cause copper deficiency.
Sources (2)
- Hemilä H. Zinc lozenges and the common cold: a meta-analysis comparing zinc acetate and zinc gluconate, and the role of zinc dosage. JRSM Open. 2017;8(5). PMID 28515951
- Hemilä H, Chalker E. The effectiveness of high dose zinc acetate lozenges on various common cold symptoms: a meta-analysis. BMC Fam Pract. 2015;16:24. PMID 25888289
Stack Score
How this pair moves the number.
Effect on the composite score
If both Oseltamivir and Zinc are in the same stack, this pair applies +2 to your Stack Score (per scored synergy row).
The full algorithm, the clamping rules, and four worked stacks are documented at /methodology/stack-score.
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