Charlie Sheen believes taking too much testosterone cream was the cause for his bizarre behaviour after leaving 'Two and a Half Men'.
The 50-year-old actor infamously ranted about being a "warlock", "winning" and having "tiger blood" in a series of outbursts in 2011 and though he felt "superhuman" at the time, he believes the hormone supplement had affected his behaviour.
He said in a recent interview: "That was a very specific period of time that did feel very out-of-body and very just detached from all things real.
"I felt superhuman during some of that.
"It was a lot of highs and lows. I was taking a lot of testosterone cream, and I think I went too far with it. It was kind of like a borderline . . . not a 'roid rage, but a 'roid disengage."
Charlie admits he regrets some of his behaviour, which included publicly criticising 'Two and a Half Men' creator Chuck Lorre, and although he enjoyed some "empowering" times, he disliked getting so angry.
He added: "That's the stuff that I do look at [and] cringe a little . . . It was nice to give people a bunch of slogans and T-shirts and all that.
"[But] the rest of it was a lot of work.
"There were things about that person that were empowering, that were vibrant . . . but I didn't like the anger. I tend to be victimised by my anger at times."