Zinc as a treatment for common colds

Taking zinc syrup, tablets or lozenges can lessen the severity and duration of the common cold, experts believe.

A review of the available scientific evidence suggests taking zinc within a day of the onset of cold symptoms speeds recovery.

It may also help ward off colds, say the authors of the Cochrane Systematic Review that included data from 15 trials involving 1,360 people.

Cold viruses can be passed from person to person not only by coughs and sneezes but also by touching contaminated surfaces such as door handles.

There is no proven treatment for the common cold, but experts believe zinc medications may help prevent and lessen infections by coating the common cold viruses and stopping them from entering the body through the thin lining of the nose.

It also appears to stop the virus from replicating, at least in laboratory tests.

There is also the suggestion that zinc aids the immune system and may dampen down some of the unpleasant reactions the body has to an invading virus.

According to trial results, zinc syrup, lozenges or tablets taken within a day of the onset of cold symptoms reduce the severity and length of illness.

At seven days, more of the patients who took zinc remedies every couple of hours during the daytime had cleared their symptoms compared to those who took placebos.

And children who took 15mg of zinc syrup or zinc lozenges daily for five months or longer caught fewer colds and took less time off school.