German news sources - such as BILD and 20min.ch - are reporting that the singer has admitted himself to a rehab clinic in Kussacht Practice.
The 51-year-old previously admitted to enjoy a number of spliffs on a daily basis, with sources now suggesting that's in the region of "25 joints a day."
According to The Irish Mirror, the treatment at the facility "reportedly costs around €100,000 and has previously been sought by other famous names, including designer John Galliano."
Secret Rehab! George Michael Checked Into Switzerland Clinic -- Smoked 25 .... https://t.co/y7ksJ4aUfV
— Switzerland News (@Switzerland) June 15, 2015
George has been involved in a number of DUI's, most notably ramming a Snappy Snaps in North London, which resulted him being imprisoned for eight weeks.
He last tweeted on May 6th, to say how chuffed he was that Adele got dressed up as him on her birthday.
Happy Birthday @OfficialAdele !!! I'm so flattered, love The Singing Greek! xxx https://t.co/oOTfzElsuT
— George Michael (@GeorgeMichael) May 6, 2015