Greed and death.

Since Zoloft’s launch in 1991, Zoloft sales have generated over $30 billion in revenue for Pfizer. Prior to Zoloft’s patent expiration in 2007, which resulted in a proliferation of less expensive generic versions of the drug, Zoloft’s annual sales were over $3 billion annually. Since its patent expired, Zoloft sales have continued to generate over $500 million in revenue each year. Currently, over 20 million prescriptions of Zoloft and generic sertraline are filled annually.