Sheen called his latest stint in rehab a "relief" in part one of an interview airing Monday on The Dr. Oz Show, in which Oz asked Sheen how many times over the year's he's attempted to quit drinking.
"About 2,000," Sheen, 50, joked during a personal conversation taking place at his home and around his neighborhood. "There was a stretch where I didn't drink for 11 years. No cocaine, no booze for 11 years. So I know that I have that in me."
He said he fell off the wagon after receiving his HIV diagnosis four years ago.
"It was to suffocate the anxiety and what my life was going to become with this condition and getting so numb I didn't think about it," Sheen told Oz. "It was the only tool I had at the time, so I believed … that would quell a lot of that angst. A lot of that fear. And it only made it worse."
Sheen also spoke out about his commitment to finding a cure for HIV, saying that in five years when his younger children are able to Google his name, they will see that he has done good work.
"They're going to see that dad is a true hero. That he helped a lot of people and continues to help people who can't help themselves," Sheen said.
The actor gave Oz an inside look at his treatment regimen, showing him his pill box and revealing that he affectionately calls the group of three pills he takes daily "Seal Team Six."
"When I take them I say, 'Okay guys, go to work. Go kill some bad guys,' " Sheen said.
At the end of the episode, Oz asked Sheen to choose three words to describe how he used to be and three words to describe how he is now.
Charlie Sheen Reveals He Was Diagnosied with HIV
"Hammered, fractured, crazy," Sheen said of his old self, adding that his new self is "focused, sober, hopeful."
In November, Sheen went on the Today show to disclose his HIV diagnosis.
Part two of Sheen's The Doctor Oz Show interview airs Tuesday (check local listings), with Oz promising a shocking revelation from Sheen regarding his battle with HIV.