Downey Jr.’s son in rehab

Robert Downey Jr.

Robert Downey Jr.’s eldest son has checked into a rehab facility.

The actor’s 20-year-old son, Indio Falconer Downey, has been admitted to a rehabilitation facility according to his mother, actress and singer Deborah Falconer.

Deborah, who left Robert in 2001 following his repeated trips to rehab, confirmed her son’s admittance to the unnamed institution but stressed that Indio is not an addict.

“He was not addicted. He was taking one pill a day,” she told the National Enquirer.

She added that Indio is receiving “holistic, natural and orthomolecular. We are hoping to do it the homeopathic way rather than with medications. He’s being treated with vitamin supplements and organic foods.”

Indio plays in a rock band, and has recently played at legendary LA night spot The Viper Rooms.

A friend close to the family opened up on how hard this has been for 48-year-old Robert, and what a shock it was.

“This is a nightmare for Robert because his boy has never been in trouble before. He’s praying for Indio’s recovery,” the source said.

Iron Man star Robert has had a well-documented history with drugs and rehab, and was arrested in 1996 for possession of heroin, cocaine and an unloaded handgun.

He even served a one-year prison sentence in 1999 after missing a required drug test.

He has since had one of the biggest comebacks in Hollywood history, and this year topped Forbes highest paid actor list, reportedly earning $50million for playing Tony Stark in the third Iron Man movie.

© Cover Media