Is Zepbound the Same as Mounjaro? Here's the Difference
Short answer: Mounjaro® and Zepbound® both contain tirzepatide, made by the same manufacturer, Eli Lilly - but they’re approved for different uses. Here’s the actual difference.
Same active ingredient, different approval
Mounjaro is FDA-approved to treat type 2 diabetes. Zepbound is FDA-approved specifically for chronic weight management in adults with obesity or overweight plus a weight-related condition. Many people use Mounjaro off-label for weight loss, since tirzepatide’s effect on appetite and metabolism isn’t limited to diabetic patients, but that’s a different regulatory pathway than Zepbound’s on-label use.
Same molecule, different brand
Tirzepatide is a dual GLP-1/GIP receptor agonist - it acts on two hormone pathways rather than the single pathway that semaglutide (Ozempic/Wegovy) targets. Mounjaro and Zepbound are the same molecule from the same manufacturer, marketed under different names for different indications.
Where compounded tirzepatide fits in
Compounded tirzepatide - available through Renlo and other telehealth providers - contains the same active pharmaceutical ingredient as both Mounjaro and Zepbound, but is prepared by a licensed compounding pharmacy rather than Eli Lilly. It’s not FDA-approved and not a generic, substitute, or equivalent of either brand-name product, but it’s a legal, regulated, and often significantly less expensive option. See tirzepatide cost without insurance for a full price comparison.
How Renlo works
Renlo offers compounded tirzepatide at $269/month ($233/month on the 3-month plan), prescribed after a licensed provider reviews your intake - typically within 12 hours. The price includes your consultation, medication, supplies, and shipping, with no membership fee. See tirzepatide pricing.
This article is for general educational purposes only and is not medical advice. Mounjaro and Zepbound are trademarks of Eli Lilly; references are for comparison and informational purposes only. Renlo’s compounded tirzepatide is not FDA-approved and is not a generic, substitute, or equivalent of Mounjaro or Zepbound.
Frequently asked questions
Are Mounjaro and Zepbound the same drug?
They contain the same active ingredient, tirzepatide, made by the same manufacturer (Eli Lilly), but they're approved for different uses.
Can I use Mounjaro instead of Zepbound for weight loss?
Mounjaro is FDA-approved for type 2 diabetes; using it for weight loss specifically is off-label. Zepbound is the version FDA-approved for chronic weight management. A licensed provider can help you understand which approach fits your situation.
Is compounded tirzepatide the same as Mounjaro or Zepbound?
Compounded tirzepatide contains the same active ingredient but is prepared by a compounding pharmacy rather than Eli Lilly. It is not FDA-approved and is not a generic, substitute, or equivalent of Mounjaro or Zepbound.