Mucinex DM Max expectorant & cough suppressant packs a powerful 1..2.. punch with dextromethorphan and Guaifenesin 400mg extended release, providing you with long-lasting relief from mucus congestion and cough Maxium strength multi-symptom relief; Mucinex DM Max is clinically proven to last up to 4hrs and provide relief for chest congestion and make coughs more productive .
