Debbie Rowe To Testify -- Michael Jackson Abused Propofol 12 Years Before Death

Michael Jackson was not only addicted to powerful drugs 12 years before he died ... at least twice in the late 90s doctors misused a drug similar to Propofol so MJ could sleep through the night ... and we've learned that's exactly what MJ's former wife Debbie Rowe will tell the jury today.

Sources familiar with Debbie Rowe's testimony tell TMZ ... Rowe -- who will be called to the stand by AEG Live -- views herself as a hostile witness, because she feels AEG is largely responsible for MJ's death.

We've learned Rowe will testify ... in 1997 doctors administered Diprivan (a form of Propofol) to Michael in a Munich, Germany hotel room. We're told Rowe will say the drug was administered specifically so Michael could sleep. There was a full medical staff present and MJ slept under the influence of the drug for 8 hours. This occurred on 2 days, either consecutive or 1 day apart.

The testimony is significant because AEG is trying to show MJ was the master of his own fate and had misused Propofol for years.

But we've learned Rowe will also say while she was married to MJ she never saw him as a raging drug addict. She will testify he was addicted to Demerol ... which he used to deal with the pain and anxiety from scalp surgeries after being horribly burned. She says when she left Michael in July, 1997, he was not an out-of-control addict. In fact, he had gone to rehab and was open about it.

As TMZ first reported, Rowe injected Michael in the buttocks with Demerol and Vistaril several times while she worked for Dr. Arnold Klein -- MJ's closest doctor and confidante. Rowe had no idea in the last months of MJ's life Klein injected the singer with Demerol scores of times.

We've learned if asked ... Rowe will say she was horrified when she saw a TMZ video of Michael looking totally out of it as he left Dr. Klein's office days before he died. The day MJ passed, Rowe will testify she called Klein and said, "You killed him. What did you give him?"

We're told Rowe wants to tell the jury ... when the "This Is It" tour was announced and she heard the breakneck concert schedule, she told her shrink, "They're [AEG] gonna kill him."