“Therapy” would have been a better title, but it’s been used. Playwright Enda Walsh goes instead with the more fashionably retro “Medicine” for his new play, which opened Tuesday at St. Ann’s Warehouse after its world premiere last year at the Edinburgh International Festival.
The unstable, surreal world of “Medicine” is familiar to any theatergoer familiar with the plays of Walsh, who also directs here: An everyman named John (Domhnall Gleeson, acting traumatized) enters an anonymous yet scuffed-up work place where a party has taken place. To emphasize the overall bleakness, there’s a “Congratulations” banner hanging overhead. Jamie Vartan’s set design also features a drum set, lots of audio equipment and what appears to be a sound booth upstage.