The Jersey Shore star - real name Mike Sorrentino - recently confirmed that he sought treatment for a "prescription medication problem".
A source close to Sorrentino has now claimed that he went through an alcohol detox during his stay at Utah's Cirque Lodge, reports TMZ.
The insider added that the star has been "very open" about his alcoholism, and that his club appearances were to blame for his addiction.
Sorrentino previously said: "I have voluntarily taken steps to get control of a prescription medication problem I had due to exhaustion.
"I have spent the past several weeks getting treatment for this problem and recuperating from my work and appearance schedule. I appreciate my fans' support, and love you guys."
Jersey Shore was recently renewed for a sixth season.
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