Mary Kennedy Suicide -- Anti-Depressants, but No Booze at Time of Death

Mary Kennedy's suicide last May was NOT fueled by alcohol ... this according to the toxicology report -- but she was on three different anti-depressants.

The Westchester County medical examiner released a report Friday saying the estranged wife of Robert F. Kennedy Jr. died with Trazodone, Desmethylvenlafaxine and Venlafaxine in her system. Those are all defined by the National Institute of Health as anti-depressants.

The report also reveals there were NO traces of alcohol found in her system when she hanged herself, despite her past struggles with alcohol addiction.