Amy Winehouse has canceled her planned appearance at this weekend's V Festival in the U.K., with her record label blaming ongoing "health issues".

The singer has pulled a run of shows in recent days, including dates in Norway and Denmark, as well as support slots with the Rolling Stones in Duesseldorf and Hamburg, Germany.

A spokesperson for her music company Island said today, "Amy Winehouse is putting her professional commitments on hold until the end of August in order to address her health issues. The situation will be reviewed in September."

The spokesperson added, "Amy will therefore not be performing at this weekend's V Festival in Chelmsford and Staffordshire or the Rock En Seine festival in Paris on Aug. 25."

The U.K. festival in Chelmsford and Staffordshire will now move the Happy Mondays up the bill to fill Winehouse's slot on the Channel 4 stage. She is due to play the Toronto leg of the festival next month.

In a statement, V Festival director Simon Moran commented, "We're very sorry to hear that Amy is unable to perform this weekend and wish her all the best. We hope that fans will not be too disappointed by the news and we would gladly welcome her to play V Festival 2008."

As previously reported, Winehouse collapsed and was treated at London's University College Hospital last week. Island declined to comment on reports that she was given an adrenaline shot and had her stomach pumped for a suspected drug overdose.

Her representatives subsequently said the singer had been ordered "to take a complete rest".

According to unconfirmed reports, Winehouse and her husband Blake Fielder-Civil are likely to return to a rehabilitation clinic.

The latest incident follows canceled appearances at Scotland's T in the Park festival and Liverpool's Summer Pops. Winehouse, who has a reputation for heavy drinking, also made headlines in March when she was unable to perform a show at London's Shepherds Bush Empire in London.