Schering Plough Is In for a Rough Ride

An editorial published in this week’s New England Journal of Medicine and recommendations from an expert panel at an American College of Cardiology meeting being held in Chicago urged that the cholesterol-lowering medications Zetia and Vytorin should be used only as the last resort to treat patients with elevated LDL-cholesterol. Instead, the panel recommended that doctors and patients should use statins, older and sometimes cheaper medications, which have been clinically proven to lower cholesterol and reduce the risk of heart attack and stroke. The panel's recommendations were announced to the almost 30,000 physicians who were attending the conference.

As you may recall, Zetia and Vytorin, which reduce cholesterol levels by inhibiting its absorption from the intestinal tract, didn’t reduce the incidence of heart attack or stroke in patients taking the medications (in the Enhance clinical trial) even though LDL-cholesterol levels were lowered. Further, there is some emerging evidence which suggests that Zetia and Vytorin may actually speed rather than slow the development of plaque in arteries. Merck and Schering are conducting larger clinical studies (initiated in 2006) to measure effects of Zetia and Vytorin on heart disease and stroke. The results from these trials are not expected until 2012

Zetia and Vytorin are among the top selling drugs in the world with combined sales of $5 billion in 2007. Approximately 5 million people, including about 4.0 million Americans take the medications which were heavily advertised to US consumers. Many cardiologists believe that heavy marketing of the drugs has resulted in their over use. The fallout from the Enhance clinical trial controversy has already depressed the sales of both Zetia and Vytorin. A greater reduction in sales is anticipated as more doctors and patients digest the implication of the Enhance trial results.

The flap over the utility of Zetia and Vytorin will likely take a heavy toll on Schering Plough’s revenue stream. Analysts say that sales of Zetia and Vytorin produce almost 70% of Schering’s profits. The controversy will have less of a direct effect on Merck which co-markets Vytorin with Schering. However, Merck is still reeling from reports last week linking its popular asthma medication Singulair to suicide. 

Things are not looking too good in pharma land these days.

Until next time….

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