I think for extended release anything between 300mg and 800mg (with benzo and alcohol) is considered lethal . This is the median range in OD deaths of extended release . Official recommendations warn patients that above 90mg is considered "OD" . But it's personal and no just about weight but metabolism (what and how? could someone explain?). So the problems are that you are on the lower side of that range , healthy , and appear to be tolerant to opioids (you previously said you nearly OD but felt fine). It could very well be fatal ..
I honestly don't know, maybe upping the Oxy x1.5 and benzos x3 would do the job? I wish people replying here could provide some information :)
If worried about vomiting , as said bit of food , and previous thread on SS suggested using AE/Meto .
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I agree with members that it should not be hasty, but
@Saddad had already spoken about that a lot , asked about it and tried to research several times , and shared their story ; it was quite planned ; he tested and prepared ; I don't understand a vague suggestion to "postpone" . He really did his best . We could explain to OP details and relevant pros/cons. Or add something that addresses member and invites them to open up ("talk" is rather simplistic) . I'm not criticizing any of you :) But personally felt something's missing. Helplines often say 'don't do it now' without adding much, I feel we should have more
(maybe I'm just tired ...)
* He has done a thorough job on his CTB :
https://sanctioned-suicide.net/threads/alternate-way-very-peaceful-no-pain.30001