Managing Lithium Dosing in Patients with Poor Adherence

Primary Strategy: Address Non-Adherence Directly

• Non-compliant patients have a 92% relapse rate versus 37.5% in compliant patients over 18 months, according to the American Academy of Child and Adolescent Psychiatry 1
• The American Academy of Child and Adolescent Psychiatry recommends focusing on preventing missed doses rather than compensating for them, as inconsistent lithium dosing is incompatible with effective treatment 1

Patient Education Components

• Educate patients and families thoroughly on early warning signs of mood episodes, so treatment resumption can occur immediately if doses are missed, as recommended by the American Academy of Child and Adolescent Psychiatry 1
• The American Academy of Child and Adolescent Psychiatry suggests educating patients on the specific relapse statistics showing >90% failure with non-adherence 1
• Lithium withdrawal, especially within 6 months, dramatically increases relapse risk, according to the American Academy of Child and Adolescent Psychiatry 1

Critical Monitoring for Non-Adherent Patients

• Increase monitoring frequency when adherence is questionable, and check serum lithium levels twice weekly during any period of suspected non-adherence until levels and clinical state stabilize, as recommended by Praxis Medical Insights 3
• Assess for concomitant medications that increase lithium levels, particularly NSAIDs, which should be avoided, according to Praxis Medical Insights 3

Common Pitfalls to Avoid

• Do not use tablet splitting to adjust doses, as this creates inconsistent dosing that makes therapeutic monitoring unreliable and dangerous, as warned by Praxis Medical Insights 2
• Do not continue maintenance therapy if adherence cannot be achieved, as the regimen needed to stabilize acute mania should be maintained for 12-24 months, and some patients need lifelong therapy, according to the American Academy of Child and Adolescent Psychiatry 1

When to Consider Discontinuation

• If adherence cannot be improved despite interventions, gradual discontinuation with close monitoring may be safer than continued erratic dosing, as recommended by the American Academy of Child and Adolescent Psychiatry 1
• Any discontinuation must be done gradually while closely monitoring for relapse, according to the American Academy of Child and Adolescent Psychiatry 1
• Consider alternative mood stabilizers with better adherence profiles if lithium cannot be taken consistently, as suggested by the American Academy of Child and Adolescent Psychiatry 1