Its been around for a while but compared to dexmethylphenidate, or Adderall proper, it doesnt have as much of the euphoria that makes it difficult to objectively assess work output, what with the slower acting formulation (but this seems kind of a given, since its a prodrug after all), it doesnt completely change your personality and you can more effectively context switch
edit: i have a perscription, due to attention span of a drosophilia melanogaster