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Smaller sleeping pill doses required

WASHINGTON - The Food and Drug Administration is requiring makers of Ambien and similar sleeping pills to lower the dosage of their drugs, based on studies suggesting patients face a higher risk of injury due to morning drowsiness.

The agency said Thursday that new research shows that the drugs remain in the bloodstream at levels high enough to interfere with morning driving, which increases the risk of car accidents.

Regulators are ordering drug manufacturers to cut the dose of the medications in half for women, who process the drug more slowly. Doses will be lowered from 10 milligrams to 5 milligrams for regular products, and 12.5 milligrams to 6.25 milligrams for extended-release formulations.

The FDA is recommending that manufacturers apply these lower doses to men as well, though it is not making them a requirement.

The new doses apply to all insomnia treatments containing the drug zolpidem, which is sold under brands including Ambien, Edluar and Zolpimist.

FDA officials say doctors should aim to prescribe the lowest dose possible that will successfully treat insomnia.

"Patients who must drive in the morning or perform some other activity requiring full alertness should talk to their health care professional about whether their sleep medicine is appropriate," said Dr. Ellis Unger, a director in FDA's Office of Drug Evaluation.

Ambien is sold by Sanofi, Edluar by Meda Pharmaceuticals Inc. and Zolpimist by NovaDel Pharma Inc.


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