New cough syrup labels to say ‘not for use in kids under four’.todayonline. October 09, 2008. Manufacturers of non-prescription pediatric cough and cold medicines are advising parents not to give them to children under age four, a consumer group announced."Leading manufacturers of these medicines are voluntarily transitioning the labeling on oral over the counter pediatric cough and cold medicines to state ‘do not use in children under four years of age’," said a statement issued Tuesday by the Consumer Healthcare Products Association.  See PDF about Xpert Alert,  from McNeil Consumer Healthcare.