Back to Tirzepatide research
tirzepatide gip agonist case report 2026-05-12 PubMed

GLP-1 Agonist Linked to Dysphoria and Aggression in Depressed Patient

A Case of GLP-1 Receptor Agonist-Induced Dysphoria and Aggression in a Patient With Underlying Major Depressive Disorder.

Background

Glucagon-like peptide-1 receptor agonists (GLP-1 RAs), such as tirzepatide, have rapidly emerged as a highly promising therapeutic option for patients seeking significant weight loss and improved metabolic health. While their efficacy in managing obesity and type 2 diabetes is well-established, there remains a significant knowledge gap regarding the full spectrum of their potential psychiatric side effects. This detailed case report specifically addresses the potential for GLP-1 RAs to induce profound mood disturbances, including dysphoria and aggression, in susceptible individuals with pre-existing psychiatric vulnerabilities.

Study Design

Population
A 64-year-old man with pre-existing Major Depressive Disorder, seeking weight loss.
Intervention
Tirzepatide (Zepbound), a GLP-1 RA, initiated for treatment; dose and duration not specified.
Outcome
The primary outcome measured was the onset and resolution of psychiatric symptoms, specifically increased impulsivity, severe dysphoria, and aggression.

This study meticulously documents a case report focusing on a 64-year-old man who presented with a pre-existing diagnosis of Major Depressive Disorder. The patient was initiated on the GLP-1 RA tirzepatide (Zepbound) as part of his treatment regimen, presumably for weight management given the drug's primary indications. The abstract does not specify the precise dosing regimen (e.g., 0.25 mg weekly escalating to 5 mg weekly) or the exact duration of treatment before symptom onset, but it confirms the development of symptoms post-initiation.

Results

Following the initiation of tirzepatide, the patient experienced a marked and concerning increase in impulsivity, severe dysphoria (described as a profound state of unease, dissatisfaction, and general unhappiness), and episodes of aggression. These adverse psychiatric symptoms were clearly observed and documented after the patient began the medication. > Crucially, all reported symptoms of increased impulsivity, dysphoria, and aggression resolved completely and spontaneously within a short period following the cessation of tirzepatide, demonstrating a strong temporal and causal relationship. This direct link between drug initiation, symptom onset, and symptom resolution upon discontinuation provides compelling evidence for the GLP-1 RA as the precipitating factor for the observed mood disturbances in this specific patient.


tirzepatide gip agonist glp 1 agonist glp-1r dose mentioned safety data present
Source: pubmed:42095721 · Ingested 2026-05-12 · Digest: gemini-2.5-flash