"Overdose" is a song recorded by American singer Ciara for her self-titled fifth studio album (2013). It was written by Josh Abraham, Oliver Goldstein, Ali Tamposi, Olivia Waithe and Ciara, while its production was handled by the former two. Ciara and Kuk Harrell were responsible for the song's vocal production. Notable for its shift from her more contemporary R&B sound towards a predominantly pop-orientated vocal style for the singer, "Overdose" served as a product of Ciara's experimentation and was recognized as the purest pop track on Ciara. An uptempo dance-pop, electropop and nu-disco song, its "club-friendly" production comprises rupturing synths and gritty, automatic beats. Its lyrical content act as an ode to codependency and are based on the subject of unhealthy infatuation.