03/28/2008 02:44 am ET Updated May 25, 2011

John Stamos Blames Ambien For Staggering, Slurring Appearance

Stamos has since apologized and blames the uncharacteristic behavior on a mixture of jet lag and sleeping pills. "There was no alcohol involved," he tells Us.

The ER star says that his odd demeanor was simply "an hour of grogginess" from having taken the prescription sleep aid Ambien, and only getting a few hours of rest. (The drug is only meant to be taken when a person can devote eight hours to sleep.)

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