Update: Yesterday, reports surfaced that Zac Efron had completed a stint in rehab five months ago and while the reason behind his stay wasn’t revealed, sources did say he “wasn’t drinking,” which made us all assume it was alcohol abuse. But now TMZ is stating otherwise, saying it was actually a cocaine addiction.

“It was common knowledge he was struggling with cocaine,” a source connected to Zac’s film Neighbors told the outlet. Along with that source, three others came forward, revealing that while his main addiction was cocaine, he also used Molly – a pure form of Ecstasy. His problem was so severe that he and his friends went on a major coke binge during at stay at the SkyLofts in Las Vegas, spending around $50,000 in drugs.

TMZ reached out to Zac’s rep on the rumor, who said, “Don’t think we’ll me making a comment.” Regardless of the reason behind Zac’s say in rehab, we’re so happy to hear that he got the help that he needed and living a much healthier life.

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Did Zac Efron complete a stint in rehab for alcohol abuse? According to sources who told E! News, that’s a yes. The 25-year-old is currently attending the Toronto International Film Festival for his drama Parkland about the JFK assassination and when asked how he was doing, Zac replied, “I’m good, real good.”

Now, his response may not seem out of the ordinary, but according to sources, he’s doing extremely well after his stint in rehab five months ago. "He's healthy, happy and not drinking," one source said. "He's taking time to focus on working,” they said.

Related Article: She's Free! Lindsay Lohan Leaves Rehab!

All of this comes as a surprise since this didn’t make Internet headlines five months ago and since it hasn’t been confirmed, nor the fact that we went to treat alcohol abuse, we’re just going to chalk this one up as speculation until then.

One thing we do know for sure is that Zac has been keeping himself very busy these past few months with a number of films coming out along with Parkland, including two comedies, That Awkward Moment and Neighbors, as well as the drama Autobahn.

Do you think this is just another Hollywood rumor or did Zac really keep his secret rehab sting under wraps?