Jul 01, 2014 05:01 PM EDT By Sam Machado

Celebrities Who Have Been To Rehab: Robin Williams, Zac Efron & More Who Have Entered A Treatment Facility [PHOTOS, VIDEO]

One of the most difficult moments for a celebrity is having to make a trip to rehab, and unfortunately, it's happened to more famous people that some might be surprised to hear.

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  • Robin Williams / Wikimedia Commons
  • Former High School Musical star Zac Efron was in rehab for about five months in 2013, according to E! News.
  • Musician Ke$ha arrives at the 41st American Music Awards in Los Angeles, Calif. (Nov. 24, 2013)
  • Charlie Sheen
  • British singer Amy Winehouse arrives at the City of Westminster Magistrates Court in central London March 17, 2009. REUTERS/Kieran Doherty
  • Actress Lindsay Lohan attends the Lindsay Lohan Press Conference at Social Film Loft during the 2014 Park City on January 20, 2014 in Park City, Utah.
  • Cory Monteith arrives at the Teen Choice 2010 Awards in Los Angeles. (August 8, 2010)
  • Photo Credit Wikimedia Commons
  • Photo Credit Reuters
  • Photo Credit Reuters
  • Photo Credit Reuters
  • Photo Credit Reuters
  • Photo Credit Reuters
  • Photo Credit Getty Images
  • Photo Credit Reuters
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