Perrigo Dextromethorphan Polistirex is an extended-release oral suspension delivering 12 hours of continuous cough suppression from a single dose. Utilizing Polistirex technology, this OTC medication gradually releases the active ingredient, providing sustained relief from coughs associated with minor throat and bronchial irritation. The extended-release formulation reduces dosing frequency, improving compliance and convenience for patients requiring round-the-clock symptom management. Equivalent to brand-name Delsym 12-Hour Cough Relief, this suspension offers cost-effective therapeutic outcomes. The 3 oz bottle provides multiple doses for extended cough management during acute respiratory conditions.