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evidence · mechanism · dose
Supplements/Mineral

Zinc Acetate

Lozenge form shown to shorten cold duration when used at first symptoms.

Immune Function

Overview

Lozenge form shown to shorten cold duration when used at first symptoms.

Natural sources
    Common forms

      Forms & variants of Zinc

      Different chemical forms of Zinc behave differently. Browse each form's mechanism, bioavailability, and best-use context.

      Parent
      Zinc

      Cofactor for ~300 enzymes — critical for testosterone, immune function, and DNA synthesis.

      Picolinate
      Zinc Picolinate

      Zinc chelated to picolinic acid — one of the most bioavailable oral forms.

      Bisglycinate
      Zinc Bisglycinate

      Glycine-chelated zinc — high absorption and very gentle on the stomach.

      Gluconate
      Zinc Gluconate

      Most common over-the-counter zinc form — affordable, moderate bioavailability.

      Bisglycinate
      Zinc Bisglycinate (High-Bio)

      Chelated zinc with superior absorption and tolerability.

      Mechanism of action

      Free Zn²⁺ in the throat inhibits rhinovirus 3C protease and ICAM-1 binding.

      Pathways
      • · Rhinovirus 3C protease inhibition

      Effects on the body

      Organ system effects

      Evidence-based benefits

      Shortens cold duration by ~33% if started within 24h

      Moderate evidence

      Potential side effects

      Common
      • · Bad taste
      • · Mouth irritation
      Rare
        Serious

          Drug interactions

          No notable interactions reported.

          Safety & non-supplemental interactions

          Educational summary — always confirm with your clinician or pharmacist before starting, stopping, or combining with prescription therapy.

          Avoid with these conditions
          • ·Autoimmune disease (theoretical immune activation)
          Avoid / monitor with these medications
          • ·Immunosuppressants

          Supplement interactions

          Pairs well with

          None listed.

          Avoid combining with

          No specific avoidances listed.

          Dosing & bioavailability

          Typical dose
          75–100 mg/day divided across lozenges for ≤7 days
          Upper safe limit
          Short-course only
          Timing
          Every 2–3h while awake at symptom onset

          Where to buy

          Affiliate-style search links to reputable retailers. We don't endorse specific brands — verify third-party testing (USP, NSF, Informed Sport) before purchase.

          Mineral
          Zinc Acetate
          Amazon
          Wide selection · fast shipping
          Mineral
          Zinc Acetate
          iHerb
          Global delivery · curated brands
          Mineral
          Zinc Acetate
          Thorne
          Practitioner-grade · NSF tested

          Scientific evidence (8)

          Meta-analysisOpen Respir Med J · 2011

          Zinc acetate lozenges and common cold duration

          Hemilä H

          Meta-analysis of zinc acetate lozenge RCTs.

          Key findings

          Shortened cold duration by ~40%.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Zinc Acetate — Shortens cold duration by ~33% if started within 24h

          Live PubMed search

          Live results for "Zinc Acetate Shortens cold duration by ~33% if started within 24h" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Zinc Acetate and "Shortens cold duration by ~33% if started within 24h". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Zinc Acetate — randomized controlled trial

          Live PubMed search

          Live results for "Zinc Acetate randomized controlled trial" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Zinc Acetate and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Zinc Acetate — meta-analysis

          Live PubMed search

          Live results for "Zinc Acetate meta-analysis" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Zinc Acetate and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Zinc Acetate — pharmacokinetics

          Live PubMed search

          Live results for "Zinc Acetate pharmacokinetics" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Zinc Acetate and "pharmacokinetics". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Zinc Acetate — safety adverse events

          Live PubMed search

          Live results for "Zinc Acetate safety adverse events" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Zinc Acetate and "safety adverse events". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewPubMed (NLM) · 1970

          PubMed: Zinc Acetate — dose response

          Live PubMed search

          Live results for "Zinc Acetate dose response" across the PubMed/MEDLINE peer-reviewed index.

          Key findings

          Opens current human and preclinical literature matching Zinc Acetate and "dose response". Filter by RCT, meta-analysis, or year on the results page.

          Open study
          Systematic reviewGoogle Scholar · 1970

          Google Scholar: Zinc Acetate — clinical evidence

          Live Scholar search

          Cross-database citation index for Zinc Acetate as it relates to "clinical evidence".

          Key findings

          Includes preprints, theses, and journal articles. Useful for tracking citation counts and follow-on work.

          Open study
          Educational use only. This profile is not medical advice. Consult a qualified healthcare professional before starting any supplement, especially if you take prescription medication or have a chronic condition.