 "Poison" is an uptempo dance-pop song produced by RedOne, BeatGeek and Jimmy Joker.It was written by Scherzinger, Bilal Hajji, Kinda Hamid, Novel Jannusi, Achraf Jannusi, RedOne in the musical key of A-minor.With a guitar-driven melody, "Poison" uses a pulsating and toxic beat throughout, which is similar to that used in the Britney Spears song, "Toxic".