The film was set to be a artistic film. But Khalid Mohammed decided to commercialize the film due to pressure from the distributors. Karishma Kapoor had a dance number added. Johnny Lever park scene was added. More songs were added. Hrithik's role increased including his work out and more songs.
The scene where Johny Lever demonstrates different kinds of laughter and makes fun of Shah Rukh Khan while Hrithik Roshan stands next to him, smiling, is an insider joke referring to the Coke wars the two stars had with each other. Hrithik supported Coke, Shahrukh Pepsi. A Pepsi commercial made fun of Hrithik, which created quite some outrage among his fans and was widely reported in the media.
Originally Amitabh Bachchan and Shah Rukh Khan were supposed to have cameo appearances, but their numbers were removed due to running time considerations.
Although Karisma Kapoor plays Hrithik Roshan's older sister in this movie, he is five months older than her in real life.
Originally Hrithik Roshan had a very small role. But after Kaho Na Pyar Hain became a blockbuster over night, Khalid Mohammed panicked. He knew expectations were high because of Hrithik, so he increased his role. Many scenes like his workout, a extra song and many scenes were added to suit Hrithk's new status of a Superstar.