It sounds as if your friend needs their lithium blood levels checked.

She should get checked if she's still experiencing these problems with feeling "sick" and having hallucinations today.

I'm sorry I can't tell you more but I have no experience with that drug. You could try asking in the Bipolar Forum though.

http://www.nlm.nih.gov/medlineplus/d...s/a681039.html
MedlinePlus - Lithium

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