Lea Michele has offered her support to Zac Efron following his recent rehab stint.
The 'Glee' actress - whose boyfriend Cory Monteith died from a heroin and alcohol overdose in July - has reached out to her 'New Year's Eve' co-star following revelations he has been battling cocaine addiction and has vowed to do her best to help him stay sober.
Zac Efron collapsed after overdosing on prescription drug oxycodone in January, it has been reported.
The former 'High School Musical' star allegedly binged on the powerful painkiller in addition to a cocktail of other drugs and alcohol during a wild night of partying in his hotel room and had to be resuscitated by guests at the party.
His 'Parklife' co-star Marcia Gay Harden has praised the ''brave'' actor - who has reportedly sought treatment for supposed cocaine and alcohol addictions earlier this year - and insisted he will motivate people to seek help in the future.
Zac Efron went to rehab because he ''needed to find himself''.
The 25-year-old actor - who shot to fame in Disney's 'High School Musical' as a teenager - quietly completed a rehab stint earlier this year, thought to be for cocaine and alcohol, and pals close to the star say he realised he needed help and took proactive steps to kick his habit.