MJ began taking painkillers after burning head in Pepsi ad shoot in 1984

Updated: Nov 14, 2011, 13:57 PM IST

New York: Michael Jackson started taking pain medication after he burned his head while shooting a Pepsi commercial more than 25 years ago, his personal manager has revealed in a new book.

In the book “My Friend Michael: An Ordinary Friendship with an Extraordinary Man,” Frank Cascio, a long-time family friend who went to work for Jackson as an assistant and then manager, wrote that the singer first took demerol after suffering burns during the commercial shoot in 1984.

Cascio also revealed that the King of Pop had been taking propofol as early as 1999, when a platform he was performing on collapsed, and also took it to treat the skin disease vitiligo.

Jackson was drugged up before his 2001 anniversary concerts and started his first show an hour late, according to the book set for released in Nov. 15.

“My naive belief that Michael wouldn’t let his medicine interfere with the show blew up in my face,” the New York Daily News quoted Cascio as writing.

“I can’t begin to describe my disappointment and panic at this moment.

“It had become clear to me that Michael’s drug use was escalating,” he wrote.

The former manager also added that he paid doctors in cash to keep the pop star’s medical issues secret.

“But in the end, physical and mental anguish prevailed, and Michael died in his endless quest to attain some inner peace,” he said.