Title: Side Effects (2013 film)
Content:  Side Effects, previously titled The Bitter Pill, was directed by Steven Soderbergh, produced by Lorenzo di Bonaventura, Gregory Jacobs, and Scott Z. Burns, who also worked on the screenplay. In January 2012, the film was reported to be produced by Annapurna Pictures. A few weeks later, Annapurna Pictures pulled out from the project, and Endgame Entertainment provided financing for the project instead. Originally, Blake Lively was cast for the lead role. However, it was later reported Rooney Mara would replace her. In March 2012, it was reported that Vinessa Shaw was in talks to join the film as the wife of Law's character.
Title: Side Effects (2005 film)
Content:  The film was written and directed by former pharmaceutical sales representative Kathleen Slattery-Moschkau. The movie is a semi-autobiographical account of Slattery-Moschkau's decade of work in the pharmaceutical industry. Katherine Heigl served as the film's executive producer.
Title: Side Effects (2013 film)
Content:  Side Effects is a 2013 American psychological thriller film directed by Steven Soderbergh and written by Scott Z. Burns. It stars Rooney Mara as a woman who is prescribed experimental drugs by psychiatrists (Jude Law and Catherine Zeta-Jones) after her husband (Channing Tatum) is released from prison. Side Effects was released in the United States on February 8, 2013, by Open Road Films.
Title: Side Effects (Mariah Carey song)
Content:  "Side Effects" was written by Carey, Scott Storch, Crystal Johnson and featured artist Young Jeezy. It was produced by Carey for Maroon Entertainment and by Storch on behalf of Tuff Jew Productions/Hustla Foundation. Copyright is held by Rye Songs which is administered by Songs of Universal (BMI)/Scott Storch Music/TVT Publishing (ASCAP)/C-Style Ink/Slide That Music/EMI-April Songs (ASCAP)/YJ Music (BMI). The track was recorded by Brian Garten at Honeysouth Studios in Miami, Florida, and mixed by Fabian Marasciullo at The Hit Factory, also in Miami. Carey and Johnson performed the background vocals. It is an R&B song with elements of electro. Lyrically, Carey is recounting a past relationship which fell into "violent times", and 
Title: Side Effects (The Chainsmokers song)
Content:  "Side Effects" is a song by American music production duo the Chainsmokers, featuring guest vocals from American singer Emily Warren. Written by Andrew Taggart, Warren, Tony Ann, Corey Sanders and Sly, with production handled by the Chainsmokers and Sly, it was released by Disruptor Records and Columbia Records on July 27, 2018, as the fifth single from the Chainsmokers' second studio album, Sick Boy.
Title: Side Effects (2005 film)
Content:  Side Effects is a 2005 romantic comedy about the pharmaceutical industry, directed by Kathleen Slattery-Moschkau and starring Katherine Heigl as Karly Hert, a pharmaceutical "detailer", who becomes disillusioned with the lack of ethics in the pharmaceutical industry and has tough choices to make. The film also stars Lucian McAfee, Dorian DeMichele as Karly’s unscrupulous boss, Dave Durbin, Temeceka Harris. The film's title is a reference to the medical term side effects and is based on a true story.
Title: The Side Effects (album)
Content: Masato David Hayakawa (マサト) – lead vocals, lyricist, composer ; Ryo Yokochi (ヨコチ) – lead guitar, programming, keyboards, composer ; Kazuya Sugiyama (スギ) – rhythm guitar, backing vocals ; Ryo Shimizu (リョウ) – bass guitar, backing vocals ; Katsuma Minatani (カツマ) – drums, percussion Ryo Kinoshita of Crystal Lake – guest vocals on "Mayday" Michael Baskette – producer, mixing ; Ted Jensen – mastering ; Jeff Moll – recording engineer ; Joshua Saldate – assistant engineer Credits retrieved from album's liner notes. Coldrain Guest feature Additional personnel
Title: Side Effects (Mariah Carey song)
Content:  "Side Effects" is a song by American singer and songwriter Mariah Carey from her eleventh studio album, E=MC² (2008). It was written by Carey, Scott Storch, Crystal Johnson and the song's featured artist, Young Jeezy. It was inspired by Carey's marriage to record executive Tommy Mottola and his controlling nature over her and her career. Carey discusses how she still deals with the side effects of the experiences that she encountered during the relationship. Critical response to the song was positive, with many critics highlighting it as an album standout, praising its candid lyrics and honesty. It charted at number 93 on the US Billboard Pop 100 chart.
Title: The Side Effects
Content:  The Side Effects were an indie rock band, part of the music scene of Athens, Georgia. The Side Effects debuted in 1980, alongside other local performers like R.E.M..
Title: Kathleen Slattery-Moschkau
Content:  In 2005, the satirical film Side Effects, which Slattery-Moschkau wrote, directed, and co-produced, was released. She has said that the story depicted in the movie, which follows fictional drug rep Karly Hert (Katherine Heigl), is "actually my story" and that she, like Hert, was stunned that experience working as a rep for the cell phone industry and a political science degree were all she needed to become a pharmaceutical sales rep. She has also said that the movie was shot in only 16 ”sleepless, crazy, insane days", and that she regrets having filmed it at so many different locations.

Question: Who was the producer of Side Effects?
Answer: Katherine Heigl.
Katherine Marie Heigl.