Mallinckrodt plc is engaging with the U.S. FDA, NIH and the Biomedical Advanced Research and Development Authority to address the potential use of its INOmax (nitric oxide) inhaled gas to treat COVID-19-associated lung complications. INOmax is marketed in the U.S. by the Staines-upon-Thames, U.K.-based company to treat full- and near-term neonates with hypoxic respiratory failure associated with pulmonary hypertension.