Which of the following statements with regard to the use of lithium for the treatment of bipolar depression is NOT true?
Lithium is effective at preventing relapse to mania and less effectively to depression.
Lithium is associated with a slightly increased risk of suicidal ideation.
Lithium concentrations ≤0.6 mmol/L may be too low to be fully effective.
Adverse effects may be associated with lithium concentrations >0.6 mmol/L.
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