I’m so sorry that you lost your son.

They are all depressants except for the acetaminophen which is a secondary component to the vicodin, it’s tylenol. So, I would expect the three depressant medications, hydrocodone, carisoprodol and alprazolam worked together to slow the respirations to a rate that was inadequate to sustain his life.

A good university library would have the appropriate interpretation guides for each of those drugs. The fact that they were combined is probably the crucial factor.

sorry you son died of a overdose. Maybe the pharmasist can tell you about the millagrams in each of the pills better.