PHOTOS: Stars Pay Tribute to Michael Jackson
"I believe there is evidence that he was dependent on Demerol, possibly," said Waldman. According to USA Today, Walderman suggests that Jackson was also addicted to opioids the month before he suddenly died.
A key symptom of Demerol withdrawal is insomnia, says Walderman, which would explain Jackson's dependency on propofol.
PHOTOS: Michael and Janet Jackson
The defense team has two witnesses left to call, after bringing five character witnesses to the stand yesterday.
Closing arguments are expected to begin next week.