GLP-1tirzepatidelithiumdrug interactioncase report

Case report links tirzepatide use to lithium toxicity in psychiatric patient

Clinicians writing in Journal of Clinical Psychopharmacology describe a single patient, raising monitoring questions for incretin users on narrow-therapeutic-index drugs.

By Maren Holt · Senior Reporter, GLP-1

Oct 18 20:00 ETSource: Journal of clinical psychopharmacology

The wire

01A case report in Journal of Clinical Psychopharmacology describes lithium toxicity associated with tirzepatide, published 19 October 2026 by Davis, Singhal, Butterfield and colleagues.
02Prescribers managing patients on both lithium and incretin therapy may want to watch lithium levels, since delayed gastric emptying and fluid shifts can alter drug handling.
03This is a single case report; causation is not established and no detail on dose, timing or lithium concentrations is available from the citation alone.

From the source

Tirzepatide-Associated Lithium Toxicity: A Case Report
Journal of clinical psychopharmacology · 2026 Oct 19 · Davis J, Singhal S, Butterfield A et al.

Read at pubmed.ncbi.nlm.nih.gov

Source URL https://pubmed.ncbi.nlm.nih.gov/42895194/