Mallinckrodt public limited company develops, manufactures, markets and distributes branded and generic specialty pharmaceutical products and therapies. The Company focuses on various therapeutic areas, such as autoimmune and rare disease specialty areas, including neurology, rheumatology, nephrology, ophthalmology and pulmonology; immunotherapy and neonatal critical care respiratory therapies; analgesics and hemostasis products, and central nervous system drugs. Its segments include Specialty Brands and Specialty Generics. The Specialty Brands segment produces and markets branded pharmaceutical products and therapies. The Specialty Generics segment produces and markets specialty generic pharmaceuticals and active pharmaceutical ingredient (API) consisting of biologics, medicinal opioids, synthetic controlled substances, acetaminophen and other active ingredients. Its product portfolio includes Acthar, Inomax, Ofirmev, Therakos immunotherapy, Hemostasis products and StrataGraft.