Dr. Katharine DeGeorge emphasizes that while some people may benefit from taking zinc tablets for colds, it comes at a monetary cost and risks adverse effects.
Research indicates that zinc can help shorten colds by preventing the virus from replicating, but there isn't sufficient evidence for proactive preventive use.
A recent Cochrane review concluded that taking zinc while sick can expedite recovery by about two days, but rated the evidence as low-certainty due to study variability.
Dr. Roy Gulick highlights that while zinc shows potential against cold viruses, there's minimal data supporting its effectiveness against flu or COVID-19.
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