The Effect
| The Effect | |
|---|---|
| Written by | Lucy Prebble | 
| Characters | Connie Tristan Dr. Lorna James Dr. Toby Sealey | 
| Date premiered | 1 November 2012 | 
| Original language | English | 
| Subject | Two people agree to volunteer in a clinical drug trial where they fall in love. | 
| Genre | Romance, drama | 
The Effect is a play by the British playwright Lucy Prebble. The story revolves around two protagonists, Connie and Tristan, who volunteer in a clinical drug trial, where they start to fall in love. Their relationship throws the trial off-course.
It received its premiere at the Royal National Theatre's Cottesloe Theatre in London in November 2012, and starred Billie Piper and Jonjo O'Neill. A revival production played at the National's Lyttelton Theatre in London in 2023, and later transferred to The Shed in New York City in 2024.