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3Medicinal

Zinc lozenges

Also sold as Zinc acetate lozenge, zinc gluconate lozenge

May shorten colds if started within 24 hours. Days, not weeks.

3TrustedSupp Tier System™ · Tier 3Take as a defined course

How long to take it

Up to about a week from symptom onset.

Who it's actually for

Adults at the very start of a cold.

Safe upper limit

Reported
Short courses only; do not exceed a week or two
Prolonged use depletes copper. Nasal zinc products have caused permanent loss of smell.
No source attached yet. Treat this as a starting point, not a citation, until reviewed.

Interactions to know about

  • Antibiotics — Especially tetracyclines and quinolones
  • Penicillamine — Chelating agent

Other supplements:

Run your full list through the interaction check.

Practical notes

  • Acetate and gluconate lozenges have the supporting data; other forms less so.
  • Dissolve slowly in the mouth — swallowing it defeats the local mechanism.
  • Never use intranasal zinc.