Research

Hormonal

Tirzepatide use is associated with a significantly increased risk of gastrointestinal adverse events (GIAEs), with nausea and diarrhea being the most frequent, and eructation and impaired gastric emptying showing the highest disproportionality.

If you start tirzepatide, expect gastrointestinal side effects like nausea or diarrhea, especially in the first few months. The risk is higher if you are male, over 65, have Type 2 Diabetes, or take other medications. Working with your doctor to start with a low dose and increase it slowly can help your body adjust and reduce these side effects.

ModerateSupportsMEDIUM confidence
FAERS data showed that nausea (27.7%) and diarrhea (12.8%) were the most frequently reported events, whereas eructation and impaired gastric emptying had the highest disproportionality.
Peng Shen et al. · PLoS ONE · 2026

Why this rating

Based on large-scale real-world pharmacovigilance data (FAERS), but subject to reporting bias and lack of controlled dosing/severity data.

Source

Gastrointestinal adverse events associated with tirzepatide: A bibliometric and pharmacovigilance analysis

Peng Shen et al. · PLoS ONE · 2026

DOI 10.1371/journal.pone.0344289

cohort · n=38859
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →