Tulisa Contostavlos has revealed she was driven to the brink of suicide when she found out she was to be charged with conspiring to supply drugs.

The former X Factor judge, who has previously admitted to struggling with depression, made the astonishing confession in her upcoming documentary, Tulisa: The Price of Fame.

In a preview clip the tearful singer said: "I'd had a drink so everything felt more intensified. So, like an idiot, I picked up 11 co-codamol and necked them with a bottle of vodka.

"I didn't know what I was thinking or what I was planning to do."

The 26-year-old went on to describe how her assistant Gareth Varey was then forced to call an ambulance after discovering what Tulisa had done.

"I refused to go to hospital," said Tulisa. "I just sat with the paramedics for a couple of hours.

"They couldn't let me go to sleep at first but eventually I did. I woke up the next day just feeling numb."

The tell all BBC documentary follows the dramatic collapse of her drugs trial after Judge Alistair McCreath told jurors there were "strong grounds to believe" the reporter Mahzer Mahmood had lied at a pre-trial hearing.

When asked by the BBC reporter if she had been thinking about taking her own life, she responded: "Yeah, I am being honest. I don't care. Yeah."

The N-Dubz star's documentary will give the public a glimpse into how the drugs sting affected her life for the past year.

The singer said "It's been a really really hard year - the most difficult year of my life but at the same time I always try to take a positive from a negative and it's given me the kind of life experience that you can't buy - that it takes some people ten years to gain. It's also made me a wiser person. Stronger."

Tulisa: The Price of Fame airs on July 28 at 10pm on BBC Three.