Single released October 7th 2008 and the music video premiered on November 17th 2008.
'Rehab' is the eighth single taken from Rihanna's third studio album, 'Good Girl Gone Bad'  in the US and the UK. It was written by Justin Timberlake, Timbaland and Hannon Lane, with Timberlake and Timbaland contributing backing vocals in the bridge of the song. It officially debuted on the Hot 100 at No.91, as of now it's peaking at No.61. making it the eighth single from 'Good Girl Gone Bad' to enter that chart. It is the first time an artist has placed eight singles from one album on the chart since Shania Twain did so with 'Come On Over'.
As of November 7th 2008, the song officially entered the Top 30 on pop radio. Rihanna and Justin Timberlake filmed the music video for the song 'Rehab' at Vasquez Rocks Park outside of Los Angeles on October 21st 2008. The director is Anthony Mandler. The video premiered on November 17th 2008 on MTV Hits.