Following a recent arrest at LAX for possessing heroin and cocaine, former One Day At A Time star MacKenzie Phillips has entered rehab, according to her lawyer Blair Berk.

MacKenzie Phillips

Airport police reported that Phillips was found to have what appeared to be these illicit drugs in her carry on luggage on August 27, 2008. She was charged with two felonies – one for for possession of heroin and cocaine and a misdemeanor charge of unauthorized possession of a hypodermic needle.

If Phillips is convicted on all charges, she could face three years and eight months behind bars for the felonies and another six months for the misdemeanor. She’s scheduled to be arraigned on October 3, 2008.