Former OC actress Mischa Barton, was hospitalized yesterday after suffering an adverse reaction to medication.
Barton, who has been sick with bronchitis since traveling to Cannes, London and Paris in the past several weeks, was at a BBQ party this week-end, when she started feeling very ill!
It seems Barton, who is on Antibiotics, enjoyed a few alcohol cocktails with her friends at the party ... but no one told Mischa that when you're on Antibiotics, never drink alcohol!

Mischa was taken immediately to a hospital in L.A. & has been there since.
She is with family & is reportedly feeling better.
Get Well Soon Mischa!