GlaxoSmithKline PLC is bracing for a challenging 2018 with the first interchangeable generic version of its blockbuster asthma drug Advair Diskus (fluticasone/salmeterol) likely to debut in the US, reducing revenues and impacting the bottom line.
During the company's fourth quarter and full year 2017 earnings call Feb. 7, CEO Emma Walmsley warned investors to anticipate...








