The FDA issued a rare 518(a) Notification Order to Royal Philips NV last week that requires the company to take more aggressive measures to notify patients, physicians and distributors about the June 2021 class I recall of its continuous positive airway pressure (CPAP) and bilevel positive airway pressure (BiPAP) systems. The recall stemmed from health risks posed by the deterioration of the polyester-based polyurethane (PE-PUR) noise reducing foam in the equipment.