But quality of evidence variable, and no clarity on optimal formulation or dose. A zinc supplement might help stave off the symptoms of respiratory tract infections, such as coughing, congestion, and sore throat, and cut illness duration, suggests a pooled analysis of the available evidence, published in the open access journal BMJ Open. But the quality … Continue reading Zinc Supplements May Help To Stave Off Respiratory Infections Such As Colds, Flu, and COVID-19