Ritalin is like that. Having no idea about sleep narcisissm I googled it and Its a bit odd - Ritalin which is methylphenindate and what I assume you mean is a drug you build a dependance to - its also habit forming as well and normally does not help people sleep
I think you might find that posting this in the ADHD forums might work best, Ritalin is not a good drug for Bipolars and while some doctors do prescribe it (in my opinion in the majority of cases without proper reasons) its a dangerous drug for anyone with a mood disorder without careful management.
Actually its dangerous full stop but don't get me started on that subject.
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