Amy Winehouse was rushed to hospital after partying with friends.
The troubled singer – who is currently staying in St Lucia while she writes her third album – was reportedly taken to a medical facility by ambulance and received emergency medical treatment after a wild night of drinking on Friday (15.05.09).
Amy was discharged later that evening, but friends of the star believe her deteriorating health may jeopardise her scheduled UK show at London's Shepherd's Bush Empire next Sunday (31.05.09).
A source told Britain's The Sun newspaper: "Amy's concert might as well be cancelled now. She's not going to make it. It's not worth her while even if she does make it, it will be a shambles. She is not ready for it."
The 25-year-old star – who has publicly battled substance abuse – was hospitalised last month after she fainted in her luxurious Caribbean villa.
Her spokesperson said it was due to dehydration. Just days later, Amy broke down in tears and appeared to be intoxicated as she sang at the St Lucia Jazz Festival.
One unhappy fan said: "Amy could barely stand up, she didn't know the words to her songs. It's a disgrace. She was so drunk she didn't know where she was. She's a lost cause."