A woman in Arizona reported an alarming reaction to the sleep aid Ambien, reports a local Fox affiliate.

Police said the 25-year-old woman claimed to have stabbed herself in the foot with a large butcher knife while she was asleep. Authorities said the woman claims she took Ambien, which is used to treat insomnia.

The woman was taken to a hospital as the investigation continues, police said.

Doctors say severe or dangerous adverse reactions to Ambien are rare, but they also can occur any time you take the medication.

“We have no idea which individuals are going to be susceptible for adverse reaction to Ambien; there’s no predictors,” said Dr. Dan Quan, an emergency room physician at Maricopa Medical Center.

Read more at www.myfox8.com