Preemptive drinking 7 shots before trauma can reduce flashbacks. But 3 shots increase rates of flashbacks - eviltoast
Moderate drinking before trauma leads to more flashbacks, study finds
www.sciencedaily.com
People who have drunk a moderate amount of alcohol before a traumatic event report more flashbacks than those who have had no alcohol, according to new research.

So if you know with 100% certain you’re about to be tortured for 5 minutes, not a bad idea to get hammered. But if they wait til you sober up a little then torture you, it’ll be worse.