How long does it take for lithium carbonate to be effective for bipolar II symptoms? And what is theraputic level? Thanks.

Varies. Onset of benefit can occur in days. This is very welcomed when this occurs but it is not discouraging if it doesn't. Depend end on a patients course of illness benefit from lithium can be realized over a few to several weeks. Therapeutic blood levels for lithium range from 0.5 to 1.2 meq/l.
Depends. The therapeutic level of lithium is 0.6 to 1.2 meq/l. The effectivity should be seen within a week at a therapeutic level. Often, depending on the symptoms of bipolar disorder , such as depression, mania or psychotic behavior, antipsychotic medications antidepressants and minor tranquilizers are given concomittantly especially during the acute stages of either mania or depression.