Credit: Bryan Bedder/Getty Images; Sam Snap/FilmMagic

Sounds like Eminem has a true friend in Elton John. The rapper has reportedly been leaning on the singer to fight his addiction to drugs.

"I've been helping Eminem over the last 18 months and he's doing brilliantly," John, 62, told BBC Radio on Friday, without going into further detail.

Eminem (real name: Marshall Mathers), 37, entered rehab for a sleeping pill addiction in 2005. He later told Vibe magazine that he would take "10 to 20" Vicodin (painkiller) pills daily. "Valium, Ambien, the numbers got so high I don't even know what I taking," he said.

John himself battled alcohol and drug abuse earlier in his career, but has claimed sobriety since the the 1980s.

"I'm there if people want my help," he said in the BBC interview. "If people ask for help you tell them where to go but there's no point advising people if they don't want to do it."

The unlikely duo performed Eminem's hit song "Stan" together at the 2001 Grammy Awards.