Comparisons Ozempic vs Mounjaro

Ozempic vs Mounjaro

Side-by-side comparison of weight loss results, pricing, side effects, and clinical data.

Ozempic

~6-10%

Mounjaro

~15-22%

Head-to-Head Comparison

Metric
OzempicOzempic (semaglutide)
MounjaroMounjaro (tirzepatide)
Drug Class
GLP-1 RA
GLP-1/GIP dual agonist
Administration
Weekly injection
Weekly injection
Dosing
Once weekly
Once weekly
Avg. Weight Loss
~6-10%
~15-22%
Half-Life
~7 days
~5 days
Compounded Cost
$900-1,100/mo (brand)
$1,000-1,200/mo (brand)
Brand Cost
$900-1,100/mo
$1,000-1,200/mo
FDA Approved
2017
2022
Key Trial
SUSTAIN trials
SURPASS trials (up to 22.5% weight loss)

Side Effects Comparison

Ozempic

  • Nausea
  • Diarrhea
  • Vomiting

Mounjaro

  • Nausea
  • Diarrhea
  • Decreased appetite

Pros & Cons

Ozempic

Pros

  • +Longer track record
  • +Well-studied safety profile
  • +Oral version available (Rybelsus)

Cons

  • -Single-receptor mechanism
  • -Lower weight loss than Mounjaro

Mounjaro

Pros

  • +Dual mechanism targets GLP-1 and GIP
  • +Greater weight loss
  • +Strong A1C reduction

Cons

  • -Only approved for diabetes (not obesity)
  • -Newer drug with less long-term data

The Verdict

Mounjaro (tirzepatide) achieves significantly more weight loss than Ozempic (semaglutide) due to its dual GLP-1/GIP mechanism. Both are FDA-approved for type 2 diabetes. For weight loss, Mounjaro is used off-label while its sister product Zepbound has the obesity approval.

SURPASS-2 compared Mounjaro to Ozempic 1mg — tirzepatide showed superior A1C reduction and weight loss at all doses.

Which Is Right for You?

Choose Ozempic if...

Patients wanting a proven diabetes medication with good weight-loss side benefit

Choose Mounjaro if...

Patients with diabetes who also want maximum weight reduction

Frequently Asked Questions

Is Mounjaro better than Ozempic?

For weight loss, clinical data shows Mounjaro (tirzepatide) produces greater weight reduction than Ozempic (semaglutide). For blood sugar control, Mounjaro also showed superior A1C reduction in the SURPASS-2 trial.

Can I switch from Ozempic to Mounjaro?

Yes, your doctor can transition you. You would typically start Mounjaro at the lowest dose (2.5mg) regardless of your Ozempic dose, then titrate up.

Do they have the same side effects?

Both share similar GI side effects (nausea, diarrhea, vomiting). The frequency is comparable, though individual experiences vary.

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