> Chronic Meth users have deficits in memory and executive functioning as well as higher rates of anxiety, depression, and most notably psychosis. [0]
In more recent times of horror:
> After the fall of the al-Assad regime in Syria, large stockpiles of the illicit drug captagon have reportedly been uncovered.
> The stockpiles, found by Syrian rebels, are believed to be linked to al-Assad military headquarters, implicating the fallen regime in the drug’s manufacture and distribution. [1]
[0] https://pmc.ncbi.nlm.nih.gov/articles/PMC3764482/
[1] https://theconversation.com/what-is-the-drug-captagon-and-ho...
https://www.cbc.ca/news2/background/friendlyfire/gopills.htm...
That being said if anyone uses drugs to avoid sleeping for many days straight I would imagine it's quite horrible for your mental health
I tried googling for more info but I haven't been able to find much in English and my Japanese isn't good enough to read at that level. I've only heard about it from my wife and a few other people in Japan. I've seen a few old posters for it at old bars.
But I'm not a doctor either so who knows really.
I wouldn't recommend them in general, but mostly because they last too long to really work with a normal 16/8 sleep cycle and the other stimmy effects can detract from things other than focus work.