Lithium Dosing for Suicidal Ideation

Introduction to Lithium Therapy

The American Academy of Child and Adolescent Psychiatry recommends lithium for long-term suicide prevention, reducing suicide attempts 8.6-fold and completed suicides 9-fold in patients with bipolar disorder, although its primary benefit is long-term rather than immediate crisis management 1, 2, 3, 4

Lithium has not been shown effective in the acute setting for immediate reduction of suicidal ideation, and a recent large VA randomized controlled trial found no reduction in repeated suicide-related events when lithium was added to usual care, as noted by the American Academy of Child and Adolescent Psychiatry 1, 2
The American Academy of Child and Adolescent Psychiatry suggests that while lithium excels at long-term suicide prevention in mood disorders, it should not be relied upon as a rapid-acting intervention for acute suicidal crises 1, 2

The American Academy of Child and Adolescent Psychiatry recommends obtaining complete blood count, thyroid function tests, urinalysis, blood urea nitrogen, creatinine, serum calcium, and pregnancy test in females before initiating lithium 3, 4, 5
The American Academy of Child and Adolescent Psychiatry suggests monitoring lithium levels twice weekly until stabilized during the acute phase 5
The American Academy of Child and Adolescent Psychiatry recommends monitoring lithium levels, renal function, thyroid function, and urinalysis every 3-6 months during the maintenance phase 3, 4, 5

Lithium carries significant lethality in overdose, with a narrow therapeutic window and potential for fatal toxicity, requiring special precautions in suicidal patients, as noted by the American Academy of Child and Adolescent Psychiatry 3, 4
The American Academy of Child and Adolescent Psychiatry suggests implementing third-party medication supervision, prescribing limited quantities with frequent refills to minimize stockpiling risk, and engaging family members to restrict access to lethal quantities 6
The American Academy of Child and Adolescent Psychiatry recommends avoiding NSAIDs, as they decrease lithium clearance and increase toxicity risk, and ensuring adequate hydration to prevent dehydration-induced lithium toxicity 5

The American Academy of Child and Adolescent Psychiatry recommends combining lithium with hospitalization when indicated, psychotherapy (CBT, DBT, IPT-A), family therapy, and psychoeducation about the illness 3, 4
The American Academy of Child and Adolescent Psychiatry suggests removing lethal means, such as firearms and lethal medications, from the environment, and maintaining close follow-up with the treating clinician available to patient and family outside therapeutic hours or having adequate coverage 3, 4