News Release
                    
                Mallinckrodt plc Announces Winners in Dublin Science Week Competition
                
      Affirms Importance and Broadened Scope of Dublin Operation
    
    DUBLIN--(BUSINESS WIRE)--Jan. 31, 2014--
      Mallinckrodt
      plc (NYSE: MNK) announced today that it has selected winners in the
      annual Science Week competition. On Friday, 31st January, the
      company will welcome Minister Joan Burton to its Damastown facility to
      award a total of €4,000 worth of scientific equipment to the top three
      entries. The competition, which this year has the theme “What Does
      Chemistry Mean to Me in My Everyday Life?”, was launched in November,
      2013, in conjunction with Pharmachemical Ireland and was open to
      first-year students in secondary schools in the Dublin 15 / County Meath
      area.
    
      Representing Mallinckrodt and presenting the awards will be Dr. David
      Keenan, recently named Vice President, Global External Manufacturing and
      Managing Director of Mallinckrodt Pharmaceuticals – Ireland.
    
      Minister Burton said: “I’m delighted to join Mallinckrodt in presenting
      these awards – it’s refreshing to see an interest in science from
      children at such a young age and gratifying to see a company like
      Mallinckrodt supporting science programs in our schools. Over the years
      Ireland has established itself as a hub for industries in the areas of
      science, technology and pharmaceuticals and the natural interest in
      these areas from our younger generation inspires hope that this will
      continue.”
    
      Dr. Keenan said, “I am delighted that we were able to launch these
      awards as part of a larger 20th anniversary celebration of
      our manufacturing presence in Ireland, and gratified by the support and
      interest shown by Minister Burton. These are exciting times at
      Mallinckrodt as we position ourselves to be a top quartile speciality
      pharmaceutical company. I am pleased to take on the leadership role of
      our Global External Manufacturing efforts here in Ireland, which is an
      indication of the strategic value we see in our presence here. As
      Mallinckrodt grows, our external manufacturing strategy will become
      increasingly important as we identify and leverage strategic partners
      and technologies to enhance value.”
    
      In Damastown, Mallinckrodt employs more than 100 individuals in its
      Principal Executive Office and Manufacturing Facility. The
      82,000-square-foot, state-of-the-art facility has produced ioversol, a
      bulk active pharmaceutical ingredient for contrast media, since 1993.
    
      Mallinckrodt was formed in January 2013, to hold the pharmaceuticals
      business of its former parent, and was spun off from its parent on June
      28, 2013.
    
      About Mallinckrodt
    
      Mallinckrodt is a global specialty pharmaceutical business that
      develops, manufactures, markets and distributes specialty pharmaceutical
      products and medical imaging agents. The company’s Specialty
      Pharmaceuticals segment includes branded and generic drugs and active
      pharmaceutical ingredients, and the Global Medical Imaging segment
      includes contrast media and nuclear imaging agents. Mallinckrodt has
      approximately 5,500 employees worldwide and commercial presence in
      roughly 70 countries. The company’s fiscal 2013 revenue totaled $2.2
      billion. To learn more about Mallinckrodt, visit www.mallinckrodt.com.
    
    

Source: Mallinckrodt
      Mallinckrodt
Lynn Phillips, 314-654-3263
Manager, Media
      Relations
lynn.phillips@mallinckrodt.com
or
Hume
      Brophy
Carl Gibney, 086.045.9555
or
Conall McDevitt,
      00.44.787.248.65.72
or
Mallinckrodt
John Moten,
      314-654-6650
Vice President, Investor Relations
john.moten@mallinckrodt.com