05/28/2007 at 09:40 AM EDT
was hospitalized Sunday after reportedly suffering a bad reaction to medication, according to TMZ.com.
A rep for the O.C.
actress said Barton was with her family and is now "feeling much better."
According to TMZ, Barton, 21, was at a friend's Memorial Day barbecue and began feeling ill. She was taken to an undisclosed hospital in Los Angeles and was "resting comfortably."
No further details were released.