Macaulay Culkin’s suicide drama!

According to sources, Macaulay Culkin’s downward spiral of heroin and oxycodone drug addictions have left the 32-year-old with thoughts of suicide.

Culkin is reportedly addicted to heroin and the powerful prescription painkiller oxycodone. The actor reportedly nearly overdosed on drugs The Enquirer reported in August.

A witness is now speaking out about his overdose, claiming the actor was “talking about killing himself – saying he had ‘nothing to live for.’ ”

“Macaulay was shooting heroin and talking about taking his own life,” the source, who was with Culkin at his apartment in New York’s SoHo neighborhood during the chilling incident, told The ENQUIRER.

“He was also taking pills, and if he hadn’t stopped, his heart would have given out.

“He was in a drugged-up state, but Macaulay clearly knew what he was doing. I’m convinced he was trying to kill himself!”

The eyewitness says Culkin was sobbing uncontrollably over the end of his eight-year relationship with “Black Swan” beauty Mila Kunis, who is now dating her “That ’70s Show” co-star Ashton Kutcher.

“Fortunately, Macaulay wasn’t alone, otherwise he likely would have ended up dead,” said the source. “There was blood on him from shooting up. It was a horrible situation, and a near-OD.”

Perhaps even more frightening, Macaulay is still in denial.

“After the incident it was clear that Macaulay needed psychological help, but he refuses to admit he has a problem,” said the source.

“The fact is that his life is at a dead end, his career is in the toilet and he can’t get over Mila, who left him because of his drug use at the time.

“The guy is going to wind up like John Belushi or River Phoenix if he doesn’t get himself into rehab.”

Culkin announced his retirement from movies at age 14 and has done little work since then, living off the money from “Home Alone” and its 1992 sequel.