United Kingdom, Feb. 24 -- Frankie Bridge was "terrified" of starting ketamine therapy because she had never taken drugs before.

The former The Saturdays star, 37, has spent years battling mental health problems and she turned to the innovative treatment - which involves the use of controlled, low doses of the dissociative anaesthetic - in a bid to tackle her depression but Frankie admits it was a nerve-wracking experience for her.

During an appearance on Daily Mail's The Life Of Bryony podcast, she explained: "For about a year I didn't see anybody [for therapy] then I got to a point where I had to pick this back up now, it was like: 'Frank, you're not fixed you need someone to come in'.

"And I got introduced to this new psychiatrist w...