
Mounjaro is owned by Eli Lilly and Company (NYSE: LLY), a publicly traded American pharmaceutical corporation headquartered in Indianapolis, Indiana. Mounjaro (tirzepatide) is an injectable medication for type 2 diabetes, approved by the FDA in May 2022. Eli Lilly reported $65.2 billion in total revenue for 2025, with Mounjaro generating $23.0 billion in sales. The same active ingredient is marketed for obesity under the brand name Zepbound, which generated $13.5 billion in 2025.
Parent Company
Founded
2022
Status
Publicly Traded
Headquarters
| Brand | Parent Company | Ownership Type |
|---|---|---|
| Mounjaro | Eli Lilly and Company | Wholly owned |
Eli Lilly developed tirzepatide through years of research into dual receptor agonism. Unlike earlier GLP-1 receptor agonists such as semaglutide (Ozempic and Wegovy), tirzepatide activates both the GLP-1 receptor and the GIP (glucose-dependent insulinotropic polypeptide) receptor. This dual mechanism was hypothesized to provide superior glycemic control and weight loss compared to single GLP-1 receptor agonists.
The SURPASS clinical trial program enrolled over 40,000 patients across multiple studies. SURPASS-2 directly compared tirzepatide to semaglutide 1 mg and showed tirzepatide's superiority in both glycemic control and weight loss. The weight loss observed in clinical trials was significant, with patients losing an average of 15 to 22% of their body weight depending on the dose.
The FDA approved Mounjaro in May 2022 for the treatment of type 2 diabetes in adults as an adjunct to diet and exercise. The approval was based on the SURPASS program results. Eli Lilly launched Mounjaro in the United States shortly after approval.
The weight loss data from Mounjaro's trials generated enormous interest in tirzepatide as an obesity treatment. Eli Lilly pursued a separate FDA approval for obesity under the brand name Zepbound. The FDA approved Zepbound in November 2023. This created a dual-brand strategy where the same active ingredient is marketed as Mounjaro for diabetes and Zepbound for obesity, mirroring Novo Nordisk's approach with semaglutide (Ozempic for diabetes, Wegovy for obesity).
Mounjaro's commercial growth has been rapid. In 2023, its first full year on the market, Mounjaro generated $5.2 billion in revenue. In 2024, revenue more than doubled to $11.5 billion. In 2025, revenue reached $23.0 billion. The combined tirzepatide franchise (Mounjaro plus Zepbound) generated $36.5 billion in 2025, making it one of the highest-grossing pharmaceutical franchises in history.
Eli Lilly has invested billions in manufacturing capacity expansion to meet demand. The company has announced new manufacturing facilities in Indiana, North Carolina, and internationally. In 2025, Eli Lilly also received FDA approval for a Kwikpen formulation of tirzepatide and submitted orforglipron, an oral GLP-1 candidate, for regulatory approval in the U.S., Japan, and EU.
What does Eli Lilly make?
Eli Lilly makes prescription pharmaceuticals across four therapeutic areas. Its most important products are Mounjaro (tirzepatide for type 2 diabetes, $23.0 billion FY2025 revenue) and Zepbound (tirzepatide for obesity, $13.5 billion FY2025 revenue). The company also makes Foundayo (orforglipron, the first oral GLP-1 pill for weight loss, approved 2026), Verzenio (breast cancer), Taltz (psoriasis), Ebglyss (atopic dermatitis), Jaypirca (CLL/SLL), Kisunla (Alzheimer's), Emgality (migraine), Trulicity (diabetes), and insulin products including Humalog and Basaglar.
Is Eli Lilly publicly traded?
Yes. Eli Lilly and Company is listed on the New York Stock Exchange under ticker LLY. The company is the largest pharmaceutical company in the world by market capitalisation, with a market value of approximately $800 billion as of mid-2026. Major institutional shareholders include Vanguard Group, BlackRock, and State Street Corporation. No single shareholder holds a controlling stake.
Who founded Eli Lilly?
Eli Lilly was founded in 1876 in Indianapolis, Indiana by Colonel Eli Lilly, a Civil War veteran and pharmacist. He was dissatisfied with the poor quality of medicines available at the time and established his company to produce pharmaceutical products of consistent quality and purity. The company made its first major breakthrough in 1923 when it produced commercial quantities of insulin, saving countless lives and establishing Eli Lilly as a leader in diabetes care.
Where is Eli Lilly headquartered?
Eli Lilly is headquartered in Indianapolis, Indiana, USA, where the company was founded in 1876. The company operates research and development centres, manufacturing facilities, and commercial operations in more than 120 countries. Its Lebanon, Indiana campus is the cornerstone of its domestic manufacturing buildout, with $21 billion in capital expansion commitments since 2020. The Lebanon API site, opening in 2027, will be the largest API production site in US history.
What is Mounjaro and Zepbound?
Mounjaro and Zepbound both contain tirzepatide, a dual GIP/GLP-1 receptor agonist developed by Eli Lilly. Mounjaro is approved for type 2 diabetes and is the most prescribed injectable medication for that condition, generating $23.0 billion in FY2025 revenue. Zepbound is approved for obesity and obstructive sleep apnea and is the most prescribed injectable medication for weight management, generating $13.5 billion in FY2025 revenue. In clinical trials, tirzepatide demonstrated superior efficacy to competing GLP-1 drugs, with patients losing approximately 20% of their body weight in obesity trials.
What is Foundayo (orforglipron)?
Foundayo (orforglipron) is the first FDA-approved oral GLP-1 pill for weight loss, approved by the FDA in Q1 2026. It is a once-daily oral non-peptide GLP-1 agonist that can be taken any time of day without food or water restrictions, differentiating it from other GLP-1 medications. In late-stage trials, orforglipron helped overweight adults without diabetes lose 12.4% of their body weight over 72 weeks at the highest dose. Lilly submitted orforglipron for type 2 diabetes approval in the US in Q2 2026 and has submitted applications in China and Japan.
What is the 340B lawsuit about?
Tampa General Hospital sued Eli Lilly in July 2026, alleging the drugmaker unlawfully cut off discounts under the federal 340B drug pricing programme after the hospital refused to provide prescription-level claims data through Lilly's 340B Electronic Submission Platform. Tampa General alleges it now pays 25% to 50% more on average for Lilly medications. About 3,000 hospitals participate in the 340B programme. Lilly says the reporting requirement is necessary to prevent duplicate discounts and programme abuses. The American Hospital Association and American Medical Association have urged federal officials to intervene.
Eli Lilly reports sustainability metrics through its ESG program. The company purchased 58% of its electricity from renewable sources in 2024, doubling its renewable energy purchasing compared to 2023. Eli Lilly's environmental standard establishes requirements for managing environmental and energy-related aspects of operations, including energy efficiency and waste reduction at manufacturing facilities that produce tirzepatide.
Eli Lilly has committed to science-based emissions reduction targets. The company's manufacturing processes for Mounjaro follow Good Manufacturing Practices (GMP) with comprehensive quality control systems. Supply chain partners must comply with Eli Lilly's supplier code of conduct, covering environmental and ethical standards.
Mounjaro does not hold independent sustainability certifications, as these are not standard for pharmaceutical products. The brand is regulated by the FDA and subject to pharmaceutical manufacturing standards. Eli Lilly contributes to community health initiatives and diabetes education programs, though Mounjaro-specific philanthropic activities are not reported separately from corporate-level programs.
Mounjaro's dual GIP/GLP-1 receptor agonist mechanism has been recognized as a breakthrough in diabetes treatment by medical professionals and pharmaceutical industry organizations. The SURPASS-2 head-to-head trial has been cited as exemplary clinical research methodology.
Eli Lilly was named Company of the Year 2025 by Pharmaceutical Executive, with tirzepatide cited as the primary driver of the company's transformation. Mounjaro's clinical trial results have been published in peer-reviewed journals including the New England Journal of Medicine and The Lancet.
The FDA approval of Mounjaro in May 2022, followed by Zepbound's approval in November 2023, expanded treatment options for millions of patients with type 2 diabetes and obesity. The dual-brand strategy has been recognized as effective pharmaceutical commercial strategy.
The FDA issued a warning letter to Eli Lilly on September 9, 2025, regarding false and misleading claims in promotional materials for Mounjaro and Zepbound. The FDA cited a direct-to-consumer video titled "An Oprah Special: Shame, Blame, and the Weight Loss Revolution" for making unsupported claims. The FDA specifically objected to statements suggesting that serious risks associated with the medications had been "overhyped," which the agency determined minimized known risks. Eli Lilly was required to respond to the warning letter with corrective actions.
Mounjaro carries a boxed warning about the potential risk of thyroid C-cell tumors, based on animal studies showing dose-dependent increases in thyroid C-cell tumors in rats. It is unknown whether Mounjaro causes thyroid C-cell tumors in humans. The warning requires careful patient selection and monitoring.
The FDA removed tirzepatide from its drug shortage list in October 2024, which meant compounded versions would no longer be allowed. This created controversy as patients who had been using compounded versions due to cost or availability concerns had to transition to FDA-approved products. The shortage status was subsequently updated as supply conditions changed.
Mounjaro's list price of approximately $1,000 per month has generated controversy regarding medication affordability. Insurance coverage varies significantly by plan. Eli Lilly has faced criticism for high pricing while offering patient assistance programs to improve access.
Mounjaro is associated with gastrointestinal side effects including nausea, vomiting, diarrhea, and abdominal pain, which can be severe enough to cause treatment discontinuation. The FDA requires labeling that documents these risks.
These competing brands operate in the same categories and provide similar products or services. Compare key attributes to understand market positioning and competitive landscape.
| Brand | Parent Company | Country | Founded | Market Position | Primary Market | Gender Target |
|---|---|---|---|---|---|---|
| Eli Lilly | USA | 2023 | Premium | Global | All-ages | |
| Novo Nordisk | Denmark | 2017 | Market leader | Global | All-ages | |
| Novo Nordisk | Denmark | 2021 | Premium | Global | All-ages |
Healthcare PharmaceuticalsOwned by Eli Lilly and Company
Prescription weight management medication containing tirzepatide. Owned by Eli Lilly and Company (NYSE: LLY). FDA-approved in November 2023.
Healthcare PharmaceuticalsOwned by Novo Nordisk
Prescription diabetes medication brand owned by Novo Nordisk, containing semaglutide as the active ingredient.
Healthcare PharmaceuticalsOwned by Novo Nordisk
Prescription weight loss medication brand owned by Novo Nordisk, containing semaglutide as the active ingredient.
Market Positioning: Mounjaro competes with 3 brands in the same categories, ranging from mass market to luxury positioning.
Geographic Distribution: Competitors are headquartered across multiple regions, indicating global competition in this market segment.
Brand Heritage: Competitor brands range from established heritage brands to newer market entrants, with founding years spanning several decades.
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