Colin Farrell has checked into rehab at The Meadows in Wickenburg, Arizona, Us Weekly can confirm. ?He put himself in there. He was not using again, but needed to do a little reset and get things back in alignment to make sure he doesn?t use again,? the source explains, adding that Farrell checked in last week. ?I had quite a high tolerance for various drugs for years, I thought. The Fantastic Beasts and Where To Find Them star celebrated being clean for 10 years during an appearance on The Ellen DeGeneres Show last year.