was rushed to the emergency room of a London hospital Monday, her reps say.
"Amy Winehouse suffered a reaction to medication at home this evening and was taken to the hospital. Doctors have advised that she will be kept under observation overnight and is likely to be released tomorrow," the singer's American rep says.
The troubled 24-year-old star was taken by ambulance from her home to University College Hospital, her U.K. spokesman Chris Goodman confirms to PEOPLE.
No other details were provided.
Late last month, the Grammy-winning Winehouse was released from the hospital
after a stay of more than 10 days for what her rep characterized as treatment for a "chest infection." At the time, her rep said she would be continuing treatment on an outpatient basis.
Reporting by MARISA LAUDADIO and PETE NORMAN