'' Sleeping Pills '' was shot in Denver and surrounding suburbs , including Thornton and Littleton ( where the notorious Columbine High School massacre took place ) . Shooting began May 1999 with completion of principal photography in November 1999 and completion of second unit filming in February 2000 . Post-production was completed in October 2003 and the film premiered at The Cairo International Film Festival the same month . The North American premier was December 4 , 2003 in Denver . Since then , the film has been shown in limited circulation in theaters around the US
Columbine High School massacre
Columbine High School massacre
Sleeping Pills (film)