According to a report by the Associated Press, top drugs getting generic competition by September 2012 are taken by millions every day: Lipitor alone is taken by about 4.3 million Americans and Plavix by 1.4 million. Generic versions of big-selling drugs for blood pressure, asthma, diabetes, depression, high triglycerides, HIV and bipolar disorder also are coming by then.
Those patients, along with businesses and taxpayers who help pay for prescription drugs through corporate and government prescription plans, collectively will save a fortune. That's because generic drugs typically cost 20 percent to 80 percent less than the brand names.
Doctors hope the lower prices will significantly reduce the number of people jeopardizing their health because they can't afford medicines they need. Generic medicines are chemically equivalent to the original brand-name drugs and work just as well for nearly all patients.
The looming revenue drop is changing the economics of the pharmaceutical industry.
In the 1990s, big pharmaceutical companies were wildly successful at creating pills that millions of people take every day for long-term conditions, from heart disease and diabetes to osteoporosis and chronic pain. The drugs are enormously profitable compared with drugs that are prescribed for short-term ailments.
The patents on those blockbusters, which were filed years before the drugs went on sale, last for 20 years at most, and many expire soon.
In recent years, many drug companies have struggled to develop new blockbuster drugs, despite multibillion-dollar research budgets and more partnerships with scientists at universities and biotech companies. The dearth of successes, partly because the "easy" treatments have already been found, has turned the short-term prognosis for "big pharma" anemic.
But pharmaceutical companies can save billions when they stop promoting drugs that have new generic rivals, and U.S. drug and biotech companies are still spending more than $65 billion a year on R&D.
Drug companies have received U.S. approval for 20 drugs this year and expect approval for other important ones the next few years. Eventually, those will help fill the revenue hole.
For now, brand-name drugmakers are scrambling to adjust for the billions in revenue that will soon be lost. Typically, they raise prices 20 percent or more in the final years before generics hit to maximize revenue. Some also contract with generic drugmakers for "authorized generics," which give the brand-name company a portion of the generic sales.
Brand-name companies also are trimming research budgets, partnering with other companies to share drug development costs and shifting more manufacturing and patient testing to low-cost countries.