But when Lana Kuykendall failed to feel better by Thursday, she checked out of the Atlanta hospital and traveled back to Greenville.

CNN: STORY HIGHLIGHTS

In SEAS, Vytorin failed to do better than placebo at treating a heart valve disease called aortic stenosis, but it did reduce the risk of heart attacks, strokes and operations to unclog arteries.

FORBES: Efficacy Questions Still Dog Vytorin

In ENHANCE, Vytorin, a combo pill of Schering-Plough's Zetia and Merck's now-generic Zocor, failed to do better than Zocor alone in preventing atherosclerosis, leading to the sales decline and big drops in the stock prices of both companies.

FORBES: The Vytorin Stretch