“... her cause of death was acute intoxication due to the combined effects of fentanyl, promethazine, hydroxyzine, and alcohol.”
Mixing fentanyl with antihistamines and alcohol is just a suicide waiting to happen.
Alcohol is the synergy for an overdose
The added culprit of note
Promethazine or phenergan is often given with opiates for nausea and added sedation
Hydroxyzine or vistoril or Atarax is a mild sedating
antihistamine
Taken alone antihistamines are difficult to die from
“Mixing fentanyl with antihistamines and alcohol is just a suicide waiting to happen.”
If you need to go, it’s a good way