A source told People magazine about Zac's crazy drug-fuelled behaviour in 2011 "He stood maybe one foot away from my face and kept saying, "I've been up for four days. I haven't slept"...He was running around with his shirt off. He kept talking, going a mile a minute. He said something like he'd been on a party train."
The 25-year-old High School Musical star was rumoured to be battling a cocaine addiction. In his first post since the news was published, he posted a new picture on WhoSay, with the following message: "Hey guys! Just returned from an incredible trip to Peru with my dad
"Just wanted to thank you all for your support these past few weeks...means the world to me. Love you guys! - Z"
We hope everything is going okay, Zac.
ZAC EFRON HAS BEEN TAKING DRUGS 'SINCE HIS HIGH SCHOOL MUSICAL DAYS'
ZAC EFRON SECRETLY CHECKED HIMSELF INTO REHAB TO TACKLE COCAINE ADDICTION
ZAC EFRON EATS A DUCK FOETUS STRAIGHT FROM THE EGG IN THE PHILIPPINES