GlaxoSmithKline plc operates within the Pharmaceutical preparations sector. In addition to historical fundamental analyses, the complete report available to purchase compares GlaxoSmithKline plc with three other companies in this sector in the United States: Abbvie Inc (2018 sales of $32.75 billion of which 100% was Pharmaceutical Products), Merck & Co. , Inc. ($42.29 billion of which 89% was Merck Pharmaceutical), and Bayer AG ($46.64 billion of which 42% was Pharmaceuticals & Biological Products).

Sales Analysis. During the year ended December of 2018, sales at GlaxoSmithKline plc were $41.01 billion. This is an increase of 4.3% versus 2017, when the company's sales were $39.30 billion. This was the third consecutive year of growth at GlaxoSmithKline plc. The sales level in 2018 was fairly close to the level five years ago: in 2013, GlaxoSmithKline plc had sales of $41.52 billion. Sales of Vaccines saw an increase that was more than double the company's growth rate: sales were up 16.7% in 2018, from $6.72 billion to $7.84 billion.