Taking high doses ofzinc for a coldmay help you feel better faster.
This article discusses zinc for colds.
It also lists medications that may negatively interact with zinc.
Verywell / Danie Drankwalter
The most comprehensive research review to date involved 5,446 participants in 28 randomized controlled trials.
When compared to a placebo, the study found zinc:
How Does Zinc Work for Colds?
How zinc works to fight the common cold is not fully understood.
After iron, it is the second most common essential mineral in our bodies.
How to Take Zinc for Colds
Zinc supplementscome in different forms.
The lozenges are commonly used to treat colds.
The overall recommendation is 75 mg to 100 mg of zinc divided into multiple doses throughout the day.
Some researchers pinpoint the optimal range as 80 mg to 92 mg.
Taking more than 100 mg of zinc a day does not offer any additional benefits.
Zinc lozenges come in different strengths with different dosing recommendations.
Do not take larger doses than recommended on the product label.
Stop taking high doses of zinc once symptoms resolve.
Do not take high doses of zinc for longer than 14 days.
Who Should Not Take Zinc?
What Foods Are High in Zinc?
If you eat a balanced diet, you should have sufficient zinc for your body to function properly.
The body does not store zinc, and it eliminates what it does not need or use.
Summary
Taking zinc supplements at the first sign of a cold may help to relieve symptoms faster.
It works best when taken within 24 hours of symptom onset, usually as a lozenge or nasal spray.
There is no standard agreement on the optimal dose.
Studies show no added benefit in taking more than 100 mg a day.
Zinc supplements may also negatively interact with certain medications, including some antibiotics, diuretics, and ACE inhibitors.
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