I'm not a medical professional, but I can provide some general information about potential symptoms associated with an overdose of quetiapine, benzodiazepines like Xanax (alprazolam), and alcohol (whiskey). It's crucial to seek immediate medical help if someone is suspected of overdosing.
Here are some possible symptoms one might experience in such an overdose:
### Central Nervous System Depression
- **Drowsiness or Sedation**: Extreme


