Love Island stars must consent to random drug testing during their time in the villa, according to documents released by ITV.
Channel bosses have lifted the lid on how the show is made by handing over paperwork to a parliamentary committee.
The Digital, Culture Media and Sport Select Committee met today after being called to probe reality TV shows following the suicide of Jeremy Kyle guest Steve Dymond.
Love Island also found itself under the microscope following the suicide of two contestants, Mike Thalassitis and Sophie Gradon.
The documents include medical assessment forms Love Island contestants must fill out, which include permission slips for medical screenings.
As well as having to undergo an "unannounced drugs test" both prior to entering the villa and "if required by us during the filming period".
It means they have to submit to random testing at any point throughout the series.
The documents include detailed medical forms the stars have to fill in, which include parts that need to be filled out by their own GP to certify them as fit to participate.
They have to undergo both physical and mental evaluations before entering the villa and continuing assessments throughout filming.
There is a zero tolerance policy when to comes to drugs, and anyone found to be taking any illegal substances, including steroids, can be kicked out of the show.
Any prescriptions medicines they are taking must be pre-approved and will be administered by production staff during filming.
Jeremy Kyle guest Steve Dymond died days after failing a lie detector test the show while trying to prove he didn't cheat on his fiancee.
The series was pulled off air and later cancelled.
His death came weeks after Love Island suffered a second tragedy when Thalassitis took his own life in March.
His death came less than a year after the suicide of a previous contestant, Sophie Gradon
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