1
Return

Lithium toxicity from angiotensin-converting enzyme inhibitor or angiotensin II receptor blocker co-prescription: A population-based cohort study

delete2026-08-05
delete0
PRE
AI
F
Fatemeh Ahmadi
F
Flory T. Muanda
E
Eric McArthur
M
Matthew Weir
A
Amit X. Garg
DOI:10.1177/02698811261473401delete
deleteOriginal
deleteOriginal request for help
deleteShare
deleteSave
Abstract

Abstract

En 中文
<jats:sec> <jats:title>Rationale:</jats:title> <jats:p>Initiating an angiotensin-converting enzyme inhibitor (ACEi) or angiotensin II receptor blocker (ARB) in patients taking lithium may increase the concentration of serum lithium and the risk of lithium toxicity.</jats:p> </jats:sec> <jats:sec> <jats:title>Objective:</jats:title> <jats:p>In patients taking lithium, to compare the 90-day risk of lithium toxicity following a new co-prescription of an ACEi or ARB versus a new co-prescription of a beta-blocker.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods:</jats:title> <jats:p> Population-based cohort study in Ontario, Canada, from 2002 to 2024. Patients 50 years of age and older taking lithium who were co-prescribed an oral ACEi or ARB ( <jats:italic toggle="yes">n</jats:italic>  = 2267) or a beta-blocker ( <jats:italic toggle="yes">n</jats:italic>  = 2110). Outcomes were assessed within 90 days of initiating the drug co-prescription. The primary outcome was a hospital admission with lithium toxicity. Secondary outcomes were all-cause mortality and all-cause hospitalization. Overlap weighting using propensity scores was used to balance groups on indicators of baseline health. Risk ratios (RR) were obtained using weighted log-binomial regression, and risk differences (RD) were obtained using weighted binomial regression. </jats:p> </jats:sec> <jats:sec> <jats:title>Results:</jats:title> <jats:p>In lithium users, co-prescription of an ACEi or ARB versus a beta-blocker was not associated with a higher risk of hospital admission with lithium toxicity (47/2267 patients co-prescribed an ACEi or ARB (2.1%) versus 54/2110 patients co-prescribed a beta-blocker (2.6%); weighted RR 0.72 (95% CI, 0.47 to 1.11); weighted RD −0.75% (95% CI, −1.74% to 0.25%). In lithium users, co-prescription of an ACEi or ARB versus a beta-blocker was not associated with a higher risk of all-cause mortality or all-cause hospitalization.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion:</jats:title> <jats:p>The findings of this study suggest that the higher risk of lithium toxicity in patients co-prescribed an ACEi or ARB observed in some prior studies may be overstated.</jats:p> </jats:sec>

Journal

Journal of Psychopharmacology cover
Journal of Psychopharmacology
IF:
5.5
Papers:
391
Citations:
9.1K

Organization

I
ICES
Scholars:
223
Papers: 120
Citations: 6
Cited Papers

Cited Papers

Citing Papers

Citing Papers