Ambien CR may cut insomnia for 6 months

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Great drug but I have lost a lot of my long term memory on it

Ambien CR May Cut Insomnia for 6 Months

In 6-Month Study, Sleep Drug Ambien CR Trumps Placebo for Chronic Insomnia

By Miranda Hitti WebMD Medical News

Reviewed by Louise Chang, MD

Jan. 4, 2008 -- The sleep drug Ambien CR may ease chronic insomnia when taken for six months, even when it's not taken every night.

Researchers report that news in the journal Sleep -- and their findings now appear on Ambien CR's label.

Duke University's Krystal, MD, and colleagues studied 1,025 adults whose insomnia had lasted for at least three months. The patients had chronic primary insomnia, meaning their insomnia wasn't due to another condition.

About two-thirds of the patients got Ambien CR. The remaining patients got placebo pills. The patients didn't know whether they were taking Ambien CR or the placebo. All of the patients also got tips for better sleep.

Krystal's team told the patients to take their assigned pills as needed -- but at least three times per week and only one pill per night -- for six months.

Every morning, the patients reported whether they had taken their pill the previous night, how well they had slept, and whether they had any morning sleepiness or difficulty concentrating.

Patients taking Ambien CR slept better, concentrated better in the morning, and were less sleepy in the morning than those taking the placebo. Patients taking Ambien CR didn't take more pills as the study progressed, suggesting that their need for the pills didn't increase.

During the study's last week, the patients didn't take Ambien CR or the placebo. There was no sign of "rebound insomnia" -- worse insomnia than before drug treatment -- during that week.

Most side effects seen with Ambien CR were mild or moderate and included headache, anxiety, and sleepiness, all of which are in line with the drug's safety profile.

Ambien CR's prescribing information now states that the drug has been shown to be effective for up to 24 weeks. The FDA approved that information on Dec. 20, 2007.

The study was funded by the drug company Sanofi Aventis, which makes Ambien CR.

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