Carrey, 56, was accused of supplying White with the drugs she used to commit suicide by overdosing in 2015.
White’s mother Brigid Sweetman and her estranged husband Mark Burton also claimed that the actor gave her multiple STIs during their relationship.
A representative for Carrey told The Hollywood Reporter that the lawsuits had been dismissed on January 25.
Recent developments in the case saw his lawyer Raymond Boucher ask that the court compel Burton to provide White’s negative STI results from prior to her relationship with Carrey.
Boucher concluded that the documents were faked, leading to the case being dismissed.
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Carrey previously filed a countersuit claiming that Sweetman and Burton’s suits were an attempt to exploit him.
He also alleged that White had tried to “extort him for millions” by threatening to go to the press and tell them he had given her an STI two years before she took her own life, according to TMZ.
The Yes Man star dropped the $372,000 suit in June last year, hoping at the time to be able to settle the Sweetman and Burton’s suits out of court.
In 2015, White was found dead in her Los Angeles home at the age of 30.
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At the time, Carrey paid tribute to White in a statement saying that he was “truly saddened” by the loss.
“I am shocked and deeply saddened by the passing of my sweet Cathriona,” he said.
“She was a truly kind and delicate Irish flower, too sensitive foe this soil, to whom loving and being loved was all that sparkled.
“My heart goers out to her family and to everyone who loved and cared about her. We have all been hit with a lightning bolt,” he concluded.
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Carrey attended White’s funeral in September 2015 and was one of the pallbearers.
The pair first began dating in 2012 before splitting a few months later.
They subsequently rekindled their romance in May 2015 but were thought to have separated just days before her death.
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