AbbVie looks beyond Humira with $63 billion deal for Botox-maker Allergan

(Reuters) - Drugmaker AbbVie Inc said on Tuesday it would buy Botox-maker Allergan Plc for about $63 billion, grabbing control of by far the biggest name in medical aesthetics to help reduce its reliance on blockbuster arthritis treatment Humira.AbbVie has been under pressure to diversify its portfolio as Humira, the world's best-selling drug, is already in competition with cheaper versions in Europe and faces expiration of its patents in 2023 in the United States, its most important..