Drug poisoning suicides are only effective in about 1.5% of cases for a variety of reasons
- many drugs used are simply not very lethal; adverse effects like seizures or blackout are more likely than death
- vomiting often prevents people from dying
- there is substantial variance in individuals' tolerances to different drugs
- modern drugs (e.g., benzos) are a lot less lethal than older medicines (e.g., barbiturates). There are reports of taking 100x+ the therapeutic dose and still surviving.
If you combine alcohol, benzos, and opioids you may be able to ctb because of the synergy between these drugs but odds are you will still survive.
Most people just vomit, blackout, and then wake up the next morning feeling really awful (physically and emotionally). The potential to damage one's liver, have a non-lethal seizure, or other complications is also high.
You could consider a still water blackout but then the odds of brain damage are increased if you survive.
Preamble I wanted to write something similar to Stan's guide to SN but I hesitate to call this a guide because I can't in good conscience make a guide for something so unreliable in terms of access, lethality, and risk of permanent injury. I.e., traumatic brain injury from hypoxia. SN is a far...
sanctioned-suicide.net
Hope this info helps! Source: I studied/researched psychopharmacology, the overdose crisis, and recreational drugs extensively in university