Mischa Barton was hospitalized for a bad reaction to antibiotics according to
TMZ. Mischa was at a party drinking a few cocktails when she suddenly got very sick, so her friends took her to the hospital. Mischa has been taking antibiotics for a bad case of bronchitis, that she has been fighting since she was in Cannes, London and France. Her reps says she is feeling much better.
As someone who is allergic to penicillin and sulfa, I know exactly what she is going through and it is not fun.
UPDATE:
X17 took this picture of Mischa Barton earlier in the day and as you can see she had red splotches on her legs and arms. That is something that you get when you have an allergic reaction to antibiotics, and believe me I would know! So while a lot of people think she might have OD'ed I am sticking with the allergic reaction.