Big pharma “tax inversion” deal Pharmaceutical giants Pfizer and Allergan are in merger talks that could bring blockbuster drugs like Pfizer’s Lyrica, Enbrel and Viagra and Allergan’s Botox and Restasis under one corporate roof Merger would create world’s largest healthcare group with market value of $332 billion Market value $219bn Market value $113bn Headquarters Revenue (2014) Number of employees Top-selling medications New York City, U.S. $49.61 billion 78,000 Lyrica – $5.16 billion (epilepsy, chronic pain) Viagra – $1.68 billion (erectile dysfunction) Dublin, Ireland $72 billion 30,000 Botox – $2 billion* (anti-wrinkle treatment) Restasis – $940 million* (dry-eye treatment ) Tax inversion deal: U.S. company buys foreign company based in low-tax jurisdiction and moves headquarters there to reduce its tax bill U.S. corporation tax: 35% Ireland corporation tax: 12.5% Sources: Statista, Vault company-profiles *2013 figures