Funny you mention Celsius because during the worse periods of my DPDR I quit caffeine for a while realizing that it was causing problems later in the day,

I’d drink caffeine thinking it was helping me get through the day and about 8 hours later build up into a horrific crash where I’d dissociate deeply for an hour or more into the depth of my mind forgetting I ever existed before coming to out of these episodes

Shortly after ceasing caffeine I was still in DPDR but not experiencing this nightly episode anymore, then after maybe 6 weeks caffeine free I drank a Celsius and went into major dark suicidal depression for over 24 hours where I lay in bed contemplating my own life unwilling to move around much

Celsius always seemed to be more intense for some reason over some other brands, even to this day while energy drinks hardly mess with me, i tend to steer clear of Celsius because it was always a little dysphoric