I won't be taking mucinex dm so quickly the next time I have coughing issues. https://www.yahoo.com/news/why-avoid-cough-syrups-think-031441686.html "In tests conducted at the Pasteur Institute in Paris, researchers found that when dextromethorphan was introduced into the cells of African green monkeys growing in petri dishes, the subsequent addition of SARS-CoV-2 resulted in more prolific viral growth".