“He’s healthy, happy and not drinking,” a source tells “E! News.”
“He’s taking time to focus on working.”
It's no surprise the “High School Musical” star managed to keep the stint quiet as he has talked about living a private life in the past, even when it comes to partying.
In an interview with “GQ” magazine in 2009 the actor revealed, “It’s common sense. If you’re gonna be drunk with your friends, don’t get wasted at the Chateau Marmont and hook up with some famous chick,” he said. “It’s not rocket science.”
The 25-year-old has been hard at work transitioning from Disney teen heartthrob to serious actor.
Zac was in Canada just last week to promote his film “Parkland” at the Toronto International Film Festival. The actor plays the role of the doctor who attempted to save John F. Kennedy’s life.
Zac's new film opens Oct. 4.