The 24 year-old actor drank heavily to deal with the pressures of fame, and on several occasions showed up to filming 'Harry Potter' still drunk.
Unbeknown to many, Daniel Radcliffe turned to booze while filming the 'Harry Potter' film series.
The now teetotal actor recently opened up about how drinking alcohol was his coping mechanism when it came to dealing with fame.
Radcliffe's meteoric rise to global stardom through the 'Harry Potter' character brought along a huge amount of pressure, and in some instances he would even show up to filming drunk.
These revelations came when the 24 year-old was speaking to Sky Arts in an interview that will air later this year.
"I would have benefited from not drinking," he admitted. "It was not making me as happy as I wanted it to."
One reason why Radcliffe chose to drink heavily was due to anxiety about not having a successful post-Potter career.
MORE: Daniel Radcliffe Wants To Be Bond Villain
"It is not a real pressure, but it is a pressure of living with the thought of, 'Oh, what if all these people are saying I am not going to have a career?" he said. "What if they are all going to be right and will be laughing and I will be consigned to a bunch of 'where are they now?' lists?'"
The British star, who has been sober since 2010, has gone on to earn critical acclaim in theatres productions as well as other film projects, but he will always credit the fantasy film series for giving him other career opportunities.
MORE: Daniel Radcliffe's Parents Banned Him From Tattoos
"People don't shout Harry Potter at me now, they tend to know my name, which is lovely," he explained. "But I always will credit the opportunities I get to Harry Potter. I would not be a happy person if I was bitter about those ten years of my life."
Radcliffe has been sober since 2010
First-time filmmaker Daniel Ragussis takes an unusual approach to this thriller. Since it's based on...
While the original 2013 magical caper was a big hit, it's style-over-substance approach didn't exactly...
Nate Foster is a young FBI agent who's selected to go undercover and infiltrate a...
Hank is a man who's been pushed to the edge, he's stranded on an island...
The Four Horsemen aren't just magicians; they're illusionists with an agenda. Their initial stunt was...
After becoming the most famous magicians in the world with their last tricks and exposing...
Igor Strausman is the less thought about assistant of the insane but brilliant Victor Frankenstein....
Amy Schumer makes her big screen debut with a script that feels like a much-extended...
With his most stylish film yet, horror specialist Alexandre Aja takes a wildly irreverent approach,...
Following the mysterious death of his girlfriend, Merrin Williams (Juno Temple), Ig Perrish (Daniel Redcliffe)...
With his first romantic-comedy, Daniel Radcliffe proves adept at delivering snappy dialogue and generating strong...
Following the vicious rape and murder of his girlfriend Merrin Williams, Ig Perrish goes on...
Ig Perrish wakes up after a particularly drunken night with a very sore head -...
Wallace has just about giving up on finding love and relationships. He's dropped out of...