Steve Alexander submits:Eli Lilly (LLY) is one of the largest of the "big pharmaceutical" companies, focusing especially on the clinical areas of the nervous system, endocrine system (hormones), cancer, and the cardiovascular system (heart and lungs). The firm also has a substantial veterinary drug business.Lilly's largest and most important drug is Zyprexa, which is used to treat schizophrenia and bipolar disorders. In 2009, Zyprexa totaled $4.9 billion dollars in sales, putting it easily within the top 10 selling drugs worldwide and representing about 22% of Eli Lilly's total revenues. Cymbalta, a strong antidepressant, delivered $3.1 billion in sales, an impressive 15% increase over 2008 and 14% of the firm's total sales. Other blockbuster contributors include: Humalog, an insulin substitute ($1.96 billion); Alimta, a lung cancer treatment ($1.7 billion); Cialis, for erectile dysfunction ($1.56 billion); Gemzar, a pancreatic cancer drug ($1.36 billion); and Evista, for osteoporosis ($1.03 billion). In all, the company has a pretty impressive portfolio of drugs, with less concentration risk than many competitors.Complete Story »