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Allergan Inc

On March 17th, 2015, Actavis completed the acquisition of Allergan, creating a $23 billion diversified global pharmaceutical company known as Allergan, headquartered in Dublin. Allergan Pharmaceuticals Ireland, a subsidiary of Allergan Inc., is based in Westport, Co. Mayo. Established in 1977, the current facility has grown to over 500,000 sq/ft on a 30 acre campus. The Westport Site has two plants – a Sterile Pharmaceutical Ophthalmic plant and a Biologics plant. Allergan currently employs 850 people in Ireland. The Allergan Eurocentre office was established in Dublin in 1996, this office provides a range of customer services and commercial support activities, to the EAME region. Members of the corporate Treasury function and the EAME Legal team are also based in Dublin

Financial Data


By Turnover

(€13.4 billion)

By Employees

7th in Top Companies By Turnover
  • 30,000
  • €13.4 billion


  • Pat O'Donnell CEO/MD

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