A preliminary toxicology report indicates Whitney Houston died due to a mix of prescription drugs, Valium and Xanax, and alcohol.

Final toxicology results will pinpoint the exact cause of death but the coroner confirms that the sedatives and alcohol combined is most likely the cause of death, not drowning.

The combination of Valium, Xanax and alcohol is said to have most likely caused Whitney Houston’s heart to stop beating due to the substances in her system inhibiting her breathing.

Thus, Whitney Houston’s death was not from drowning, although she was discovered submerged in a bathtub.

A preliminary toxicology report indicates Whitney Houston died due to a mix of prescription drugs, Valium and Xanax, and alcohol

Whitney Houston was found submerged in the bathtub in her suite at the Beverly Hilton in Los Angeles, just hours before she was to perform for Clive Davis’ pre-Grammy party.

The final report will definitively determine exactly what amounts of substances and which drugs killed her.

Whitney Houston, 48, was found in the bathtub of her guest room at the Beverly Hilton Hotel on the eve of the 54th Grammy Awards, February 11, 2012. She was pronounced dead at about 4:00 p.m. that afternoon.