LONDON , England ( CNN ) -- Troubled singer Amy Winehouse has been admitted to a London hospital after suffering a bad reaction to medication , her representative said Tuesday . Amy Winehouse has undeniable talent , but has become better known for her wild behavior . Winehouse , 25 , 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 , saying only it is part of her `` ongoing treatment . '' It was not clear Tuesday whether she had been discharged . Yesterday Winehouse 's husband Blake Fielder-Civil lost his appeal against his 27-month jail term for assault and perverting the course of justice . Earlier this month he was moved from prison to a drug rehabilitation unit . The Grammy-winning Winehouse has suffered a string of health problems in recent years , many related to her battles with drug addiction . She spent two weeks in a drug rehabilitation clinic in January . See a timeline of Winehouse 's career » . One of her biggest hits is the song `` Rehab , '' describing her reluctance to enter a clinic . Another bad reaction to medication prompted Winehouse to enter a London hospital in July , but she was discharged the next day . Winehouse won five Grammy awards earlier this year -- three for `` Rehab , '' as well as Album of the Year and Best New Artist .
Amy Winehouse representative : I am so sorry to hear about your loss. Another bad reaction to medication prompted Winehouse to enter hospital in July . Grammy-winning Winehouse has suffered a string of health problems .