Hi Samira
As other people have already said,
the hope of meds is to suppress the worst symptoms sufficeintly that someone can engage in therapies which actually address the trauma and teach coping skills (chemicals don't teach skills).
With PTSD or any other psychiatric condition at its worst, the meds are used to suppress the wall of extremely rigid thinking, and to allow the person to begin to function and to reason.
Some of the top trauma practitioners no longer believe that meds have much or even any place in the treatment of trauma. Notable among them would be Bessel van der Kolk.
Regarding some of the meds - there's a large meta analysis into SSRI effectiveness (for depression) published in the JAMA in 2012.
bear in mind that for a study to be published it needs to show positive results (there is no J Neg Res - so we don't know what proportion of studies failed to find a relationship, they're all lost and forgotten, they don't get into meta analyses) so meta analyses begin with that in built positive bias.
Despite that inbuilt bias, the meta analysis still found that SSRIs were statistically indistinguishable from a placebo
the sugar pill placebo doesn't have side effects, which for SSRIs include nausea, dry mouth, vertigo, suicidality, violence (shown in under 25s), trashed sexual function (sometimes permenant), emotional flatness.
van der Kolk has a paper on his academia.edu page of a trial he ran comparing prozac, EMDR and placebo for PTSD - it's worth a look, Prozac was not statistically significant compared to the placebo.
I've argued on here that since the 2012 meta analysis was published, prescribing SSRIs is a contravention of "do no harm"
You are doing a masters in nursing
can you request to try a small dose of some of the common meds as a one off? then you'll have an idea of what they are like. From that accounts that I've read, you'll probably need to do it over a weekend, as you'll be feeling ill and unable to work
Good luck with the write up
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