THE cocktail of drugs given to Michael Jackson as he struggled to fall asleep was "a recipe for disaster" and ultimately caused his death, a court has heard.
Dr Conrad Murray's treatment of the star was also described as "unethical, disturbing and beyond comprehension".
Sleep therapy expert Dr Nader Kamangar was asked to tell jurors what he knew about the events of June 25, 2009, the day of Jackson's death.
"To summarise, Mr Jackson was receiving very inappropriate therapy in a home setting, receiving very potent therapies without monitoring," Kamangar said. Diazepam (Valium), lorazepam (Ativan) and midazolam (Versed) were given to the sleepless star during a 10-hour period throughout the night and morning.
"This cocktail was a recipe for disaster," Kamangar said.
Noting the addition of propofol (Dipravan), a powerful anaesthetic used in surgeries, Murray's lawyer asked: "Could this have caused death?"
"Absolutely," Kamangar said. "Absolutely."
Authorities say Murray gave Jackson a fatal dose of propofol. Murray has pleaded not guilty to involuntary manslaughter.
The witness, one of the experts who evaluated Murray's actions for the California Medical Board, expressed dismay about the drugs Murray gave the pop star, his failure to immediately call for help, and his lack of monitoring and record-keeping.