She Moved From ‘The O.C.' Toward An OD!

BASKET case Mischa Barton has a death wish — and the troubled actress is trying her best to fulfill it with drugs!

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The National ENQUIRER has exclusively obtained text messages and photos of “The O.C.” star that reveal a drug-fueled downward spiral sparked the bizarre meltdown that put her in a psych ward!

Texts between Mischa, 31, and a pal also reveal the British-born actress has been using virtually any drug she can get her hands on — and disturbing images show she may be shooting pills, or even heroin, into her body!

When asked in a text whether she wanted the stimulant Adderall, Mischa replied: “I need those. And I would kiss your face for a couple Xanax and some Norcos ... just like a couple of those.”

But then she added: “Well, how about 30 addy [Adderalls] 7 Norcos and 4 Xanax. Ideally … ”

Xanax is a sedative used to treat anxiety and panic disorders. It can be extremely addictive. Norcos are potent pain pills.