AMY WINEHOUSE was last night warned: "Quit drugs now or die."

The junkie singer, 24, was still in hospital having tests last night after she fainted on Monday.

And doctors warned her next collapse could be her last.

A source said: "She might have escaped this time, but eventually she wont get up again.

"The only thing to stop that happening is if she quits drugs."

Doctors said the faint could be linked to her massive overdose last summer.

Brain tests at the time revealed problems linked to drugs. Amy was told she would keep having seizures unless she quit.

The source said yesterday: "After this, it looks like they were right."

Pals urged the singer to quit the music scene to make a full recovery.

One said: "She should not work for at least six months. Its irresponsible of her team to keep putting her on stage.

"She needs to get away from temptations."

Amy, who has fought heroin and crack addiction, is due to play Glastonbury and Nelson Mandelas 90th birthday this month.

Yesterday dad Mitch, who drove her from home in Camden, North London, to the London Clinic near Harley Street, said: "Shes doing fine."

Her spokesman denied she had been partying.