The title of this episode is in Russian and translates to 'Limitless.'
The black and white photo of Kretsy Prison, an actual prison in St. Petersburg, is in reality a photo of the Kingsbridge Armory found in The Bronx, NYC.
The word "Davai" used by Brian (while on NZT with Piper) also means "Medicine or Drug" in the Hindi language.
The alias that Brian says that Piper is using is Frances Houseman, which is the name of Jennifer Grey's character, "Baby" in the movie "Dirty Dancing."