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Reuters Health Information (2010-05-26): U.S. warns of liver risk with Glaxo, Roche diet drugs

Regulatory

U.S. warns of liver risk with Glaxo, Roche diet drugs

Last Updated: 2010-05-26 14:01:15 -0400 (Reuters Health)

WASHINGTON (Reuters) - Weight-loss drugs from GlaxoSmithKline PLC and Roche Holding AG will carry new warnings about rare reports of liver injury, U.S. health officials said on Wednesday.

The Food and Drug Administration said it had not determined that Roche's prescription drug Xenical or Glaxo's over-the-counter pill Alli caused liver damage but felt the public should be alerted because the condition is serious.

Patients should stop taking either medicine and consult a doctor if they notice any signs of liver injury, the FDA said.

The FDA said it reviewed 12 cases of severe liver damage in patients outside the United States who took Xenical, and one in a U.S. patient who took Alli. Two died and three needed liver transplants.

Some patients took other drugs or had other conditions that may have contributed to liver damage, the FDA said.

An estimated 40 million people worldwide have taken Xenical or Alli, the FDA said. Both medicines contain the ingredient orlistat. Xenical was approved in 1999 and Alli, which contains half the amount of orlistat as Xenical, was cleared in 2007.

Roche said in a statement the company and the FDA agreed to add the information about liver damage to the precautions listed on Xenical's prescribing instructions.

"We will continue to monitor the safety profile of Xenical and provide this information to the FDA," the company said.

The FDA said it was working with Glaxo to add a similar warning to Alli.

A Glaxo spokeswoman had no immediate comment.

 
 
 
 
                 
 
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