GlaxoSmithKline (GSK) gives anxiety, asthma, and other ailments the ax. One of the top five pharmaceutical firms in the world, GSK's bestsellers include respiratory, neurological, cardiovascular and dermatology drugs, as well as vaccines and antivirals. Its top product is asthma medication Advair (aka Seretide), which combines two of its other asthma products, Flovent and Serevent. Other bestsellers include epilepsy treatment Lamictal, cholesterol medicine Lovaza, and prostate enlargement treatment Avodart. GSK's consumer products include Tums, dental care products Aquafresh and Sensodyne, and smoking-cessation products NicoDerm and Nicorette. In 2015 GSK bought Novartis’ Vaccines and Consumer Health business, and sold its cancer drugs business to the same company.