Heather Locklear was "out of control" when her sister called 911 on Thursday, according to Entertainment Tonight.
"Heather became a different person on drugs," a source told the show.
The parents of the "Melrose Place" actress said Friday she was in "no danger" and was "going to be just fine," according to People Magazine.
The site TMZ.com reported that a law enforcement source said the actress had mixed alchohol with prescription drugs.
This is not the first time a 911 call is placed for the actress. In 2008 a 911 call was made by apparently her doctor who said she was trying to commit suicide, according to People Magazine.
Paramedics arrived to Locklear's home and after she appeared to be fine, no further action was taken, People Magazine reported.