Amy: I am on hard drugs but can beat them

The singer, who collapsed last week after taking a cocktail of heroin, ecstasy, cocaine and the horse tranquilliser ketamine, is now in rehab in the US.

She decided to take action over her problems during crisis talks at a five-star hotel in Hampshire where she was recovering with her husband, Blake Fielder-Civil.

She was reported to have been caught smoking heroin in her suite by a friend, at which point her father Mitch flipped.

Taxi driver Mitch arrived the next day with his wife Janis, and Fielder-Civil's stepfather Giles Civil and mother Georgette.

According to a source close to the family, the meeting descended into a row and at one point Mr Winehouse grabbed Mr Civil by the throat.

The source told a newspaper: "It broke Amy's heart to see her parents and in-laws fighting.

"That was when she realised the drink and drugs were causing problems for everyone."

Mr Winehouse was also said to have demanded that Fielder-Civil be fitted with an implant to curb his habit.

Although he refused, 25-year-old Fielder-Civil admitted he had a problem with heroin and cocaine.

But he and Winehouse, 23, both denied injecting heroin.

The source said: "At one point both Amy and Blake stripped to prove they had not been using needles.

"But they realise that if they don't get help now, they will both die young. This is their wake-up call."

The couple flew to the US later on Saturday and are today in their third day of intensive counselling and detox treatment.