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Tirzepatide vs Semaglutide: Which GLP-1 is Right for You?

Compare tirzepatide and semaglutide, the two leading GLP-1 medications for weight loss. Understand the differences in effectiveness, side effects, and cost.

December 4, 2025

Comparing the Two Leading GLP-1 Medications

Both tirzepatide (Mounjaro/Zepbound) and semaglutide (Wegovy/Ozempic) have emerged as powerful tools in the fight against obesity. But how do they compare?

Mechanism of Action

**Semaglutide** is a GLP-1 receptor agonist that mimics a single gut hormone.

**Tirzepatide** is a dual GIP/GLP-1 receptor agonist, targeting two gut hormones simultaneously.

Weight Loss Results

Clinical trials show impressive results for both:

**Semaglutide (STEP trials):**

  • 15-17% average weight loss
  • 86% of patients lost at least 5% body weight
  • **Tirzepatide (SURMOUNT trials):**

  • 20-25% average weight loss
  • 96% of patients lost at least 5% body weight
  • Side Effect Profiles

    Both medications share similar side effects:

  • Gastrointestinal symptoms (nausea, diarrhea, constipation)
  • Decreased appetite
  • Injection site reactions
  • Tirzepatide may have slightly higher rates of GI side effects initially.

    Cost Comparison

    Without insurance, both medications are similarly priced at $1,000-1,500/month. However, compounded versions may be available at lower costs through qualified clinics.

    Making Your Choice

    The best medication depends on your individual health profile, goals, and response to treatment. Many patients who plateau on semaglutide have found success switching to tirzepatide.

    Consult with a medical weight loss specialist to determine the optimal choice for your situation.

    tirzepatidesemaglutidecomparisonMounjaroZepbound

    Ready to Get Started?

    Find a verified GLP-1 weight loss clinic near you and start your journey today.