AstraZeneca's products run the gamut from A (blood pressure drug Atacand) to Z (prostate and breast cancer drug Zoladex). One of the world's major pharmaceutical firms, AstraZeneca specializes in drugs for cardiovascular, metabolic, neurological, gastrointestinal, respiratory, oncology, and infection therapy areas. The firm's biggest sellers include cholesterol reducer Crestor, cardiovascular drug Brilinta, acid reflux remedy Nexium, and Symbicort for asthma. AstraZeneca also markets drugs that aim to treat high cholesterol, diabetes, pain, viral diseases, and various cancers. The company's products are sold in more than 100 countries.