Overview
Lozenges started within 24h of symptom onset shorten colds ~33%.
- Whole foods (leafy greens, legumes, nuts, seeds, seafood, animal proteins)
- Fortified foods such as cereals, breads, plant milks, and table salt
- Mineral supplements as chelates, citrates, glycinates, or inorganic salts
- Chelated form (glycinate, bisglycinate, citrate, malate)
- Inorganic salt (oxide, sulfate, chloride)
- Liquid ionic solution
- Topical or transdermal preparation
Mechanism of action
Free Zn²⁺ in throat inhibits rhinovirus 3C protease and ICAM-1 binding.
- · Free Zn²⁺ in throat inhibits rhinovirus 3C protease
- · ICAM-1 binding
Effects on the body
Organ system effects
Evidence-based benefits
Reduces cold duration if started early
Moderate evidencePotential side effects
- · Bad taste
Drug interactions
Supplement interactions
- A high-quality multivitaminCovers micronutrient cofactors that support most supplement pathways.
- Omega-3 (EPA/DHA)Foundational anti-inflammatory support that complements most regimens.
No specific avoidances listed.
Dosing & bioavailability
Where to buy
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Third-party testedIndependently verified Zinc (Immune Use) — look for USP, NSF, or Informed Sport seals on the label for purity and dose accuracy.Zinc (Immune Use) third party tested NSF
CapsulesPre-measured Zinc (Immune Use) capsules — easiest for travel and consistent daily dosing without scoops or scales.Zinc (Immune Use) capsules
PowderBulk unflavored Zinc (Immune Use) powder — best cost-per-gram and flexible dosing for stacking or mixing into drinks.Zinc (Immune Use) powder unflavored
Best sellersMost-purchased Zinc (Immune Use) products on Amazon — a quick way to see what's reviewed widely before you commit.Zinc (Immune Use) best sellerScientific evidence8Show studiesHide studies
Zinc lozenges and the common cold
Hemilä H
Meta-analysis of zinc-acetate lozenge RCTs.
Shortened cold duration by ~33%.
PubMed: Zinc (Immune Use) — Reduces cold duration if started early
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