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Do Zinc Lozenges Actually Work as a Cold Treatment?
The review found zinc may cut cold duration by 2.4 days, but authors said the evidence is weak and inconsistent.
- A 2024 Cochrane Database of Systematic Reviews paper analyzed 34 studies on zinc for common colds, finding zinc may reduce cold duration by around 2.4 days, though researchers expressed "little confidence" in the evidence.
- Finnish researcher Harri Hemil noted study results often vary due to differing zinc formulations and dosages; a 2011 review of 13 studies found daily doses below 75 milligrams proved ineffective, while higher amounts showed benefits.
- Hemil said finding effective lozenges remains difficult, as many market brands like Cold-EEZE contain only 11 milligrams of zinc, requiring users to consume six to seven lozenges daily to surpass the 75 milligram threshold.
- Michigan State University professor Mark Ebell stated, "As far as we know, there are no serious risks to taking the lozenges for a few days," though side effects like nausea and diarrhea may deter some users.
- Experts warn against regular high-dose zinc, which can cause copper deficiency, and advise caution with nasal sprays linked to permanent smell loss; always consult a doctor before adding supplements, as intake should stay below 40 milligrams.
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Zinc is one of the most talked about minerals when it comes to fighting colds and flu. It is found naturally in foods like meat, seafood, and legumes, or is available as lozenges and supplements. Zinc plays a vital role in immune system function and wound healing. This article explains whether […] The article Can Zinc Help With Colds and Flu? What the Science Says appeared first on Seleo.gr.
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