• M.C.M. Klosterfrau Operating Company Ltd.
• M.C.M. Klosterfrau Vertriebsgesellschaft GmbH
• MADAUS GmbH
• MARCMED Sp. z o.o. Medicofarma S.A.
• MAYOLY INDUSTRIE
• MAYOLY PHARMA FRANCE
• MIAS Pharma Limited
• MIAS Pharma Limited Siegfried Hameln GmbH
• MIAS Pharma Limited Tillomed Malta Limited
• MIAS Pharma Ltd, SGS Pharma Hungary Kft.
• MIAS Pharma Ltd, Tillomed Malta Limited
• MIAT S.p.A.
• MIP Pharma Austria GmbH
• MIP Pharma GmbH
• MITIM S.r.l.
• MSN Labs Europe Limited Pharmadox Healthcare Limited
• MSN Labs Europe Limited Pharmadox Healthcare Ltd.
• Madaus GmbH
• Madus GmbH
• MagnaPharm SK s. r. o.
• Mako Pharma Sp. z o.o.
• Manufacture of Cosmetics and Perfumes "Elissa" mgr Irena Ocioszyńska
• Maria Skłodowska-Curie National Institute of Oncology - State Research Institute, Branch in Gliwice
• Martin Dow Pharmaceuticals, Meiji Pharma Spain S.A.
• Mauermann – Arzneimittel KG
• McDermott Laboratories Limited (t.a. Gerard Laboratories) Mylan Hungary Limited Pharma Pack Hungary Limited
• McDermott Laboratories Limited (t.a. Gerard Laboratories), Medis International a.s., Mylan Germany GmbH, Mylan Hungary Kft.
• McDermott Laboratories Limited T/A Gerard Laboratories T/A Mylan Dublin Mylan Hungary Kft.
• McDermott Laboratories Ltd t/a Gerard Laboratories, Mylan Hungary Kft.
• McDermott Laboratories Ltd. T/A Gerard Laboratories
• McDermott Laboratories t/a Gerard Laboratories
• McDermott Laboratories t/a Gerard Laboratories, Mylan Germany GmbH, Mylan Hungary Ltd.
• McDermott Laboratories t/a Gerard Laboratories, Mylan Hungary Ltd.
• McDermott Laboratories t/a Gerard Laboratories, Mylan Hungary Ltd., Synthon Hispania S.L.
• McNeil AB
• McNeil Healthcare (Ireland) Limited
• Meda Pharma GmbH & Co. KG, Mylan Hungary Kft.
• Medana Pharma S.A.
• Medana Pharma Terpol Group S.A. Pharmaceutical Plants POLPHARMA S.A. Pharmaceutical Plants POLPHARMA S.A. Branch Medana in Sieradz
• Medezin Sp. z o.o.
• Medgenix Benelux NV
• Medi-Radiopharma Ltd
• Medi-Radiopharma Ltd.
• Medical Valley Invest AB
• Medice Arzneimittel Puetter GmbH & Co. KG
• Medichem S.A.
• Medicofarma S.A.
• Medicofarma S.A. Pharmadox Healthcare Ltd.
• Medicproduct a.s., Sanofi S.p.A.
• Medinfar Manufacturing S.A.