Mounjaro vs Zepbound: Two Brand Names for Tirzepatide

Eli Lilly's dual GIP/GLP-1 agonist is sold under two brand names — one FDA-approved for diabetes, one for obesity. Here's how they differ.

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Updated June 2026Medically reviewed by licensed providers

Mounjaro vs Zepbound: both are FDA-approved GLP-1 medications for weight loss. Mounjaro (tirzepatide) and Zepbound (tirzepatide) differ in mechanism and clinical efficacy. Weight Method offers both from $199/month with virtual consultations and licensed providers.

Overview

Mounjaro and Zepbound are two separate FDA-approved, once-weekly injectable pens manufactured by Eli Lilly, both containing tirzepatide, a dual GIP and GLP-1 receptor agonist. Mounjaro received FDA approval in 2022 for type 2 diabetes; Zepbound was approved in 2023 for chronic weight management. Both use the same dose range (2.5–15 mg) and identical injection devices — the distinction is purely regulatory and affects how each is prescribed and covered. Weight Method does not dispense or prescribe either brand-name product; our program provides compounded tirzepatide through licensed providers and U.S.-licensed pharmacies. Whether tirzepatide is appropriate for you is a decision made by a licensed provider based on your individual medical profile.

Key Fact

Mounjaro and Zepbound are both tirzepatide products from Eli Lilly. Mounjaro: FDA-approved for type 2 diabetes (May 2022). Zepbound: FDA-approved for chronic weight management (November 2023). Same molecule, same dosing (2.5–15 mg weekly), different FDA-approved indications — and both are different from Weight Method's compounded program.

Source: FDA approval data (Mounjaro; Zepbound)

Mounjaro

ManufacturerEli Lilly
Active Ingredienttirzepatide
FDA IndicationType 2 diabetes
FDA Approval2022
FormulationInjectable pen
FrequencyOnce weekly
Available Doses2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg
Avg. Weight Loss15-21%
Our Price$329/mo

Zepbound

ManufacturerEli Lilly
Active Ingredienttirzepatide
FDA IndicationChronic weight management
FDA Approval2023
FormulationInjectable pen
FrequencyOnce weekly
Available Doses2.5mg, 5mg, 7.5mg, 10mg, 12.5mg, 15mg
Avg. Weight Loss20-25%
Our Price$329/mo

Key Differences

Mounjaro and Zepbound contain the same molecule at the same doses; the difference is the FDA-approved indication (type 2 diabetes vs. chronic weight management) and how each is covered by insurers. The mechanism class — dual GIP/GLP-1 receptor agonist — is identical. Which medication and indication is clinically appropriate for any individual is determined by a licensed provider based on that person's medical history. Weight Method's program offers compounded tirzepatide at $329/mo, a flat all-inclusive monthly rate.

Verdict

Mounjaro and Zepbound are distinct FDA-approved branded products from Eli Lilly with different approved uses; neither is what Weight Method dispenses. The right option for an individual — and whether tirzepatide is appropriate at all — depends on that person's medical profile and is determined by a licensed provider. Weight Method provides compounded tirzepatide at $329/mo through a streamlined online consultation.

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Frequently Asked Questions

Both contain tirzepatide made by Eli Lilly and use the same dosing range (2.5–15 mg). The difference is their FDA-approved indication: Mounjaro for type 2 diabetes and Zepbound for chronic weight management. They are marketed and prescribed as separate products.

They contain the same active ingredient at the same dose range; the difference is the FDA-approved indication (diabetes vs. chronic weight management) and how insurers cover each. Which one is appropriate for a given person is a clinical decision made by a licensed provider based on their individual medical profile.

FDA-approved indications and prescribing decisions differ between the two products, and Weight Method dispenses neither brand. Whether a particular medication is appropriate for an individual is determined by a licensed provider based on that person's health profile and the applicable approved indication.

The side effect profiles are similar since both contain tirzepatide. Commonly reported effects are gastrointestinal — nausea, vomiting, diarrhea, constipation, and decreased appetite — and are typically most noticeable during dose escalation. A licensed provider monitors tolerability for patients in Weight Method's compounded program.

Through Weight Method's subscription program, compounded tirzepatide is available at $329/month with an online provider consultation, medical review, dose adjustments, and ongoing support all included in that flat monthly price.

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