GLP-1 vs Tirzepatide for weight loss
Short answer: For weight loss, more users report improvement with GLP-1 — 100% of 6 reports, versus 94% of 206 for Tirzepatide.
GLP-1 has 1,037 meta-analyses and 1,604 randomized trials on PubMed; Tirzepatide has 214 and 132.
Based on 28 reports about GLP-1 and 428 about Tirzepatide. Not medical advice.
| GLP-1 Medication | Tirzepatide Medication | |
|---|---|---|
| Users say it helped | 78%helped14 reports · few reports | 75%helped287 reports · high confidence |
| Verdict | Mostly positive | Mostly positive |
| Research | AResearch: Strong | AResearch: Strong |
| Meta-analyses / RCTs | 1,037 / 1,604 | 214 / 132 |
| Mainly used for | ||
| Weight loss % reporting improvement | 100% (6) | 94% (206) |
| Appetite % reporting improvement | — | 84% (79) |
| Energy % reporting improvement | — | 44% (32) |
| Mood % reporting improvement | — | 63% (27) |
| Performance % reporting improvement | — | 83% (12) |
| Common side effects | hair loss, difficulty recovering, stomach issues | nausea, fatigue, anhedonia, constipation |
| Typical dose reported | Not listed | Not listed |
Potent GLP-1 RAs, such as tirzepatide and semaglutide, demonstrate greater overall weight loss but are associated with a significant reduction in lean mass.
Metabolism, 2025 ↗“I felt better, for certain. Think the insulin clearing the excess sugar's really imrove your well being.”
This study shows that new anti-diabetic drugs, particularly GLP1-RA and Tirzepatide, are the most effective in inducing weight loss in patients with type 2 diabetes. Interestingly, exenatide appears to be the only GLP1-RA that induces a mild weight loss.
Pharmacol Res, 2021 ↗“Tirzepatide works so well! Do some research in the r/peptides subreddit and the r/tirzepatide subreddit. It's the most effective thing I've ever seen for appetite suppressant.”
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Percentages come from first-hand user reports and are not clinical outcomes. Talk to a doctor before starting, stopping or combining anything. How we rate