Research

Hormonal

Tirzepatide significantly increases the risk of gastrointestinal adverse events, including nausea, vomiting, and diarrhea, compared to placebo.

Be prepared for potential stomach issues like nausea, vomiting, and diarrhea when starting tirzepatide. These side effects are common and significantly more likely than with a placebo. Starting at a low dose and increasing slowly can help your body adjust. If side effects are severe, talk to your doctor about adjusting your dose or stopping the medication.

GoodSupportsHIGH confidence
However, the risk of adverse events such as nausea (OR 4.26, 95% CI 2.60 to 3.81), vomiting (OR 8.35, 95% CI 5.19 to 13.45), and diarrhea (OR 3.57, 95% CI 2.80 to 4.57) was significantly higher for tirzepatide versus placebo.
Ligang Liu et al. · International Journal of Clinical Pharmacy · 2024

Why this rating

Meta-analysis of RCTs provides robust evidence for safety outcomes.

Source

Efficacy and safety of tirzepatide versus placebo in overweight or obese adults without diabetes: a systematic review and meta-analysis of randomized controlled trials

Ligang Liu et al. · International Journal of Clinical Pharmacy · 2024

DOI 10.1007/s11096-024-01779-x

Meta-analysis · 3 studiesCited 26×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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