Eminem has revealed Sir Elton John calls him every week to make sure he is off drugs.

The 'We Made You' rapper - who was forced to cancel the European leg of his 2005 tour so he could be admitted into rehab after becoming hooked on prescription drugs - is grateful for the 'Rocket Man' singer's support and insists Elton understands the pressures of the music industry.

Eminem said: "Elton calls me once a week. He's somebody who is in the business and can identify and relate to the lifestyle and how hectic things can be for artists. He understands the pressure."

The 37-year-old hip-hop star befriended the 63-year-old musician - who beat an addiction to cocaine and alcoholism - after they performed together at the 2001 Grammy Awards and Elton helped him through his stint in rehab in 2005.

Eminem - real name Marshall Mathers - said: "I reached out to him and told him, 'Look, I'm going through a problem and I need your advice.'

"He used to tell me stuff like, 'You're going to start seeing certain things you've been overlooking.' And it came true.

"I'd walk around like, 'Damn, that tree does look crazy, look at all those leaves!' Things I didn't notice when I was f***ed up."

The Detroit-born star documents his battle with drug addiction on new LP 'Recovery'.