Lithium Therapy Guidelines

Introduction to Lithium Dosing

The American Academy of Sleep Medicine suggests that lithium toxicity begins at 1.5 mEq/L and serious toxicity occurs at >2.0 mEq/L 1
Initial monitoring should be twice weekly until levels and clinical condition stabilize, as recommended by the Journal of Clinical Sleep Medicine 2
Toxicity is closely related to serum concentrations and can occur at doses close to therapeutic levels, according to the Journal of Clinical Sleep Medicine and Praxis Medical Insights 1, 2

Patients with renal impairment, specifically those with GFR <60 mL/min/1.73 m², require lower starting doses and more frequent monitoring, as stated by Praxis Medical Insights 1
A 50% dose reduction is recommended for patients with GFR <30 mL/min/1.73 m², according to Praxis Medical Insights 1
Lithium may cause fetal harm based on animal and human studies, as noted by the Journal of Clinical Sleep Medicine 2

The guideline recommends never splitting tablets to achieve doses, as this creates inconsistent dosing that makes therapeutic monitoring unreliable and dangerous, according to Praxis Medical Insights 1
Never make concurrent medication changes during lithium initiation or dose adjustments, as advised by Praxis Medical Insights 3