Allergan, Plc is an Irish pharmaceutical company, one of the leading manufacturers of generic medicines in more than 100 countries. It was founded in 2004 under the name Actavis, Plc. In 2014, the company acquired a major producer of botulinum toxin - Allergan, inc, after which it restructured and was renamed Allergan, Plc. In 2015 there was to be a merger with Pfizer, which would be the largest deal in history, with an estimated value of 150-160 billion dollars, but at the last moment, the companies abandoned it.