Who told you Xan doesn't work?
I've seen articles that have outlined people who've died from intentional ingestion of SN had lorazepam or Alprazolam to accompany the process of being unconsciousness faster so I don't know if they're lying or you're telling the truth but benzos/sedatives do work and I'd argue increase the chances of success than not. The actress Lindsey pearlman who used this exact method had Lorazepam and Metoclopramide found within her system when Post-mortem was conducted.
Will you be a veggie?
That's everyone's greatest fear isn't it as I've come to see it however there's plenty of different answers across this forum since opinions have shifted about if that is possible and since there have been cases where people did have acute hypoxic injury, it is possible to be brain damaged but in both those cases, those individuals were brain dead, not brain damaged. I haven't seen any cases relating to people ending up brain damaged entirely to be rendered in a vegetative state from SN, I'd say you have to higher chance to dying from some other complications than brain damage.
speaking of, what does SN do to your body? i read that it looks blue, which is fine, but it wont be awful right? i dont want my family picturing my death as something gory, i wanna just look asleep or whatever, even if im not doing it anywhere near my home.
Will it be awful
I've seen a fair few pictures of what dead bodies with cyanoisis from autopsies and honestly, given how most people don't look too good after death anyway, it doesn't look too bad, at least your head and face will be intact and not split open
Finally, addressing the pain part
It truly depends what people can handle because it's main issues are tachycardia and nausea which for some people is a good reason to avoid SN altogether for being emetophobic or having gastrointestinal issues that could cause some pain or people with extreme nausea who will have a hard time keeping the SN down long enough to be absorbed. There's a reason why the meds are listed in the 1st place, to facilitate a "peaceful" passing, I'd say that SN has its downsides in the department of the variety of symptoms one could experience however if one really wants to go then these symptoms will be nothing more than formality. There's been various examples on this forum over the years, some questionable due to their inconsistencies while others are eye-opening into how close some came to ctb it certain things went differently. The search function is there for a reason after all, to gather as much information and data as you can on this method.
The nitrite from the SN absorption causes methemoglobinemia which results in death BUT the organs need oxygen, if death doesn't occur (there is a chance of that happening) you can sustain organ damage but its not the only thing that can happen, you can live without any harm done. A user on SS has tachycardia since a failed attempt but that was ignored, maybe to promote the SN method which is being compared to N.
That could possibly be due to being given too much Methelyne blue at once, considering they had to travel an hour to even receive that treatment of the 1st place so that suggest, to me, that their condition was quickly deteriorating.
A similar thing happened with Symbiote years ago who developed heart issues after being given too much Methelyne blue after their attempt.