The 32-year-old star, who played Donnie Azoff in Martin Scrosese's directorial, said he had to be hospitalised for ingesting artificial drugs for almost seven months, reported Entertainment Tonight.
"If you ingest that much matter into your lungs you'll get very sick, and we were literally doing fake coke for seven months, every day," Hill said.
But even though it caused a lot of trouble to his health, The "21 Jump Street" star says the experience was not bad at all.
Hill also praised Scorsese and called him a genius.
"He's such a genius on so many levels, that it is unexplainable."
"The Wolf of Wall Street" starred Oscar-winning actor Leonardo DiCaprio in the lead role.