http://articles.mercola.com/sites/articles/archive/2008/01/02/cough-suppressants.aspxDextromethorphan, the major ingredient in most OTC cough medicines, has been shown to cause birth defects and fetal death in chicken embryos exposed to concentrations relative to those typically taken by humans. Researchers found that dextromethorphanenCommunityServer 2008.5 SP1 (Build: 31106.3070)