07/29/2008 at 06:15 AM EDT
has been discharged from the hospital 12 hours after she was rushed to an emergency room, PEOPLE has confirmed.
"Amy is fine and she is on her way home," says her U.K. rep, Chris Goodman.
Winehouse, 24, was taken by ambulance from her home in north London to the University College Hospital on Monday night
after suffering what was believed to be a seizure. Wrapped in a red blanket, she was taken to the vehicle in a wheelchair while her dad Mitch looked on.
The setback was part of her struggle to get clean, the rep insists. (Both the singer and her incarcerated husband
Blake Fielder-Civil, 26, have a history of drug problems.)
"She was taking a new [medication] as part of her anti-drug treatment program," says Goodman. "And it was an adverse reaction to that new drug. You have to try different things but unfortunately this was not the right one."
Last month, the Grammy winner was admitted to a London clinic after fainting at home
. Almost exactly a year ago, Winehouse was treated at the University College Hospital for "exhaustion
." Her father later revealed she had overdosed and need her stomach pumped.
She also spent a brief stint
in rehab this year.
Winehouse's rep claims the troubled singer plans to take it easy in the coming months.
"She has a few gigs to perform," says Goodman. "After [playing a few summer] festivals, she is going to continue writing her new album. It will be rest and writing."