Init sa Magdamag (transl.:âÂÂHeat at Overnight) is a 1983 Filipino drama film directed by Laurice Guillen from a story and screenplay by Raquel Villavicencio. The film stars Lorna Tolentino, Dindo Fernando and Joel Torre.
The theme song of the same name was originally performed by Sharon Cuneta and Nonoy Zuñiga. It gained popularity before the movie was released. Other covers include Ariel Rivera, Jun Polistico, Marvin Ong and Maffy Soler which was used as the theme song of the 2011 television series Mga Nagbabagang Bulaklak, and Jona which was used as the theme song of the 2021 television series of the same name.