Zinc For Colds This Season?

Two weeks ago, my wife was doing her weekly childcare activity of love watching our two toddler grandchildren while our adult kids were on a business trip. The 3.5-year-old had brought home a viral respiratory infection the week before, gave it to his one-year-old brother and both kids were now in the tail stages of recovering from annoying but not serious illnesses.

In today’s world, coming home from school with a sore throat, runny nose and malaise means tea and honey, warm soup and a COVID-19 test. Both kids were negative but several days later my wife, then I, had similar symptoms. My wife’s symptoms settled in her sinuses and 10 days later her doctor put her on antibiotics and nasal spray. I was fortunately much less symptomatic but still have some nasal congestion and dry cough. We have a commercial preparation of a zinc product to prevent and reduce the symptoms of these infections but did not get around to taking them. In the past the literature wanted us to take these lozenges every two hours and I was not going to set an alarm at night to wake up to suck on a zinc tablet.

Jennifer-Hunter, PhD, from the Western Sydney University and associates studied the questions about zinc products’ effect on preventing and abating the common cold and published their findings in the online version of the BMJ Open on November 1, 2021. They looked at 28 randomized controlled studies with 5,456 patients. Their results showed that oral or intranasal zinc did prevent about 5 infections of those exposed per 100 persons when compared to a placebo. They found that if you challenged healthy individuals with a human rhinovirus inoculation the sublingual zinc did not prevent a clinical cold. Those who continued the zinc tended to have resolution of symptoms two days earlier than those who took placebo. For those who took the zinc prep there were more episodes of nausea and mouth and nose irritation.

I appreciate the science and think I will pass on the zinc for now and stick with avoidance of sick individuals plus chicken soup, tea and honey when I catch the virus anyway.

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