Amy Winehouse hospitalized for drug reaction

LONDON, England (CNN) - Troubled British singer Amy Winehouse has been admitted to a London hospital after suffering a bad reaction to medication, her representative said Tuesday.

Winehouse went to the private London Clinic on Sunday, said her spokesman, Chris Goodman. He said Winehouse's medication made her ill and her doctors asked her to come in so they could investigate.

Goodman did not disclose what type of medication was involved, and it was not clear Tuesday whether she had been discharged. Another bad reaction to medication prompted Winehouse to enter a London hospital in July.

The Grammy-winning Winehouse has suffered a string of health problems in recent years, many related to her battles with drug addiction. One of her biggest hits is the song "Rehab," describing her reluctance to enter a substance-abuse clinic.