Mounjaro is a diabetes medication manufactured by Eli Lilly and Company. The medication is also used for weight management and weight loss among obese patients. However, recently, Mounjaro has been associated with severe health issues, like gastroparesis (stomach paralysis), gallbladder disease, gallstones, and other stomach problems.
As a result, patients are now filing lawsuits after developing adverse health problems after taking it. However, despite reports of severe side effects from this medication, no recalls have been issued. Mounjaro lawsuits claim that Eli Lilly & Co. knew about the severe health risks connected with Mounjaro but didn’t adequately warn patients and doctors about them. If you or a loved one developed adverse side effects after taking this drug, you may qualify to file a Mounjaro lawsuit to seek monetary compensation. Contact a skilled Mounjaro attorney to find out your legal options.
What is Mounjaro and How Does it Work?
Mounjaro is a pioneering medication for treating and managing type 2 diabetes. This FDA-approved medication targets gastric inhibitory polypeptide (GIP) and glucagon-like peptide-1 (GLP-1) receptors. The United States Food and Drug Administration (FDA) approved it in May 2022.
The GIP and GLP-1 receptors are connected to GIP and GLP-1 hormones, which are produced in the intestines after eating and are vital in blood sugar regulation. GLP-1 stimulates insulin production while repressing glucagon production. Conversely, GIP triggers the production of both glucagon and insulin. Mounjaro works by triggering the actions of these hormones, facilitating insulin production, suppressing glucagon production, and slowing food digestion, hence reducing post-meal blood sugar surges.
This game-changer medication addresses the global demand for more samedicinesnt medicines for type 2 diabetes. Type 2 diabetes is a prevalent disease characterized by increased blood sugar that can harm body organs, vessels, and nerves over time. Clinical trials have shown Mounjaro’s superior efficacy in blood sugar regulation compared to other type 2 diabetes treatments like insulin and metformin.
Although this drug was only approved for diabetes treatment, recently, it has become popular among doctors for weight management and weight loss treatments in obese patients. This form of “off-label” use for weight management is common for other diabetes medications like Wegovy and Ozempic.
Reported Side Effects and Health Risks of Mounjaro
Mounjaro (tirzepatide) is a medication injection prescribed for adults with type 2 diabetes. As with other medicines, it can cause side effects, including diarrhea, nausea, constipation, vomiting, and appetite loss.
It has a box warning, the most severe warning from the FDA.
While rare, the most severe side effects of this diabetes medication include:
- Debilitating allergic reactions. Stop using the drug and seek medical attention immediately if you experience any of the following signs of a severe allergic reaction:
- Racing heart
- Wheezing or breathing problems
- General ill feeling or fever
- Swelling of the lips, face, tongue, mouth, or throat
- Swollen lymph nodes
- Skin rash, itching, or hives
- Throat tightness or trouble swallowing
- Vomiting or nausea
- Feeling lightheaded, dizziness, or fainting
- Joint pain
- Stomach cramps
- Thyroid tumors (swelling or a lump in your neck)
- Pancreatitis (inflammation of the pancreas)
- Hypoglycemia (low blood sugar)
- Kidney damage. Signs include reduced need to pee, unusual tiredness, swelling in your ankles, feet, or legs, confusion, seizures, and nausea.
- Gastroparesis. Symptoms include severe vomiting, nausea, stomach pain, abdominal bloating, feeling full quickly when eating, and severe diarrhea.
- Vision damage. Symptoms include loss of central vision, blurry vision, and black spots in your vision.
- Cholelithiasis or gallbladder problems. Symptoms include fever, stomach pain, pale-colored stool, or jaundice.
If you experience any of the above-mentioned symptoms, please call your doctor immediately. However, don’t stop taking the GLP-1 medication unless your doctor advises you to.
Gastroparesis: The Central Issue in Mounjaro Lawsuits
Like the Ozempic lawsuits, people are now filing gastroparesis lawsuits against Eli Lilly and Company, the manufacturer of Mounjaro. They claim that Eli Lilly & Co. knew about reports of gastroparesis and other stomach problems but did not adequately investigate these side effects’ extent and long-term nature.
Because Mounjaro is an agonist for GIP and GLP-1 intestinal hormones, it’s believed that the medication can have synergistic and compounded effects on gastrointestinal system functions.
Gastroparesis, or stomach paralysis, occurs when stomach muscles malfunction. This hinders their ability to process and move food and prevents the stomach from properly emptying.
The diabetes drug is intentionally created to slow gastric emptying to help in weight loss and weight management. However, due to this mechanism, Mounjaro gastroparesis lawsuits claim it causes gastroparesis. Eli Lilly Co. didn’t warn doctors and patients that continued use of Mounjaro can potentially cause prolonged, chronic delays in stomach emptying.
Legal Basis for Mounjaro Litigation Against Eli Lilly
Patients are filing Mounjaro gastroparesis lawsuits against Eli Lilly and Company. These Mounjaro lawsuits claim severe injury after using the type 2 diabetes medication. The complainants allege they developed severe health conditions, like gastroparesis and gastrointestinal problems, and that Eli Lilly didn’t warn them about these debilitating side effects.
Mounjaro gastroparesis lawsuits allege:
- Eli Lilly didn’t adequately warn consumers: Complaints claim that Eli Lilly should have disclosed all the drug’s potential risks to consumers and medical professionals. They claim that Eli Lilly either knew or should have known that consumers could be harmed after using the medication. The failure-to-warn lawsuits may help push for proper medication labelling, helping patients understand all the potential health risks in the future.
- Breach of express warranty: Complainants also claim Eli Lilly marketed Mounjaro as a safe medication. In its advertisements, it alleged that the drug wouldn’t cause debilitating problems like gastroparesis. If that express warranty was present, complainants might not have used the medication and suffered health problems.
Current Status of Mounjaro Lawsuits and MDL Proceedings
As of March 2025, over 1,521 cases are pending in the federal multidistrict litigation (MDL) no. 3094 against Eli Lilly & Co., the maker of Mounjaro, and other pharmaceutical companies. The federal court will hear arguments from both sides in May 2025. These arguments will center on what experts should be allowed to air their opinions during the 2026 court trials. Plaintiffs can still file allegations associated with the debilitating side effects after taking the diabetes medication.
Between December 2024 and February 2025, 143 new plaintiffs joined the merged litigation against Eli Lilly and other pharmaceutical companies, bringing the pending cases to 1,443. As more patients take this GLP-1 medication to treat and manage diabetes, more individuals will sadly develop severe health complications and join the litigation.
By December 2024, nearly 1,300 complainants had filed Mounjaro gastroparesis lawsuits. Eli Lilly and Company, the manufacturer of Mounjaro, is the defendant in some of the lawsuits. Plaintiffs filing this Mounjaro side effects litigation experienced debilitating complications, such as vision loss, blood clots, and gastrointestinal problems, after taking the medication.
Eligibility Criteria for Filing a Mounjaro Lawsuit
You must meet specific conditions to file a Mounjaro lawsuit. The best way to establish if you meet the necessary conditions for filing a Mounjaro claim is by consulting a skilled Mounjaro gastroparesis attorney.
Conditions for filing a Mounjaro lawsuit:
- You must have medical records, like prescriptions, to prove you used the medication
- You must be able to prove you suffered adverse health complications, including gastroparesis, persistent or prolonged vomiting, severe diarrhea, gallbladder cancer, or sinus cancer.
It’s imperative to note that many of those who developed a serious health complication after using this GLP-1 medication will be eligible to file a Mounjaro lawsuit. An experienced attorney can help establish if you qualify to file a lawsuit during a legal consultation. If you are eligible, you can seek financial compensation for damages, such as past and future medical bills and lost income.
Potential Compensation and Damages in Mounjaro Cases
Since Tripzepatide legal claims are in the early stages, it’s almost impossible to estimate the potential settlement and payout value accurately. The biggest uncertainty in Mounjaro side effects litigation is whether the scientific evidence behind these lawsuits will hold up in court. This is always an imperative question in pharmaceutical lawsuits like this.
With that in mind, most personal injury attorneys estimate that a successful Mounjaro case may have a compensation value ranging from $150,000 to $300,000. That figure is lower than our estimate for the Ozempic lawsuits because Mounjaro has been in the markets for a shorter period than Ozempic. This means Mounjaro complainants have had lesser exposure to the medication than Ozempic complainants, which implies that Mounjaro lawsuits are somehow weaker.
Comparing Mounjaro to Other GLP-1 Medications in Litigation
Patients who were prescribed Ozempic and/or Mounjaro for the management of type 2 diabetes or weight loss and have developed severe side effects are now filing product liability lawsuits against Eli Lilly & Co. and Novo Nordisk, manufacturers of these medications.
The FDA approved Mounjaro and Ozempic for managing and treating type 2 diabetes. These medications aid insulin release, lowering blood sugar. Doctors also discovered that both drugs are extremely effective in aiding weight loss and weight management, and many are prescribing them for this reason without FDA approval.
Novo Nordisk, the Ozempic manufacturer, also markets and sells another medication known as Wegovy. The FDA approved Wegovy for weight loss only; however, it has the same active ingredients as Ozempic (Semaglutide) and can potentially cause similar risks. There are more GLP-1 drugs to be concerned about, including Trulicity, Rybelsus, and Saxenda. These medications that were initially FDA-approved for the treatment and management of diabetes were later marketed as “magical weight loss solutions.” The drugs are manufactured by Eli Lilly and Company or Novo Nordisk, so future product liability lawsuits against these drug manufacturers could be possible.
In the summer of 2023, lawsuits were filed against Novo Nordisk and Eli Lilly & Co., the makers of Mounjaro and Ozempic. The lawsuit alleges that the pharmaceutical companies didn’t adequately warn doctors and patients of the potential risks of taking these drugs. The aggrieved parties, who were prescribed Mounjaro or Ozempic, had to be hospitalized or go to emergency rooms severally due to severe health complications, like severe vomiting, diarrhea, gastrointestinal issues, or gallbladder problems.
Another plaintiff claims she ended up in ICU because she couldn’t keep liquids down her system without vomiting—no lawsuits against Rybelsus, Wegovy, Saxenda, or even Trulicityexist. Still, doctors and patients must be aware of any potential adverse health complications that may occur while using these GLP-1 medications.
FDA Warnings and Regulatory Actions Regarding Mounjaro
This GLP-1 medication comes with an FDA “black box” warning that it has caused cancerous and non-cancerous thyroid tumors in rats and mice. The higher the dosage and the longer you take this medication, the more you’re likely to develop those tumors.
It’s still not known if the drug can have the same effect on humans; however, it’s not recommended for persons who have a family or personal history of thyroid cancer.
Hence, if you’re taking it and you develop any of these symptoms, notify your doctor as soon as possible:
- Hoarseness
- A swelling or lump in your neck
- Shortness of breath
- Trouble swallowing
Steps to Take if You’ve Experienced Mounjaro Side Effects
If you experience severe health complications, including severe stomach paralysis, gastrointestinal problems, abdominal pain, vomiting, or nausea, after using Mounjaro, contact your doctor or pharmacist immediately. And don’t stop taking the medication unless your doctor advises you to. If the complications seem fatal or you think you are having a medical emergency, call 911 or your local emergency. Further, it’s imperative to document any medications or treatments you get and keep a record of your symptoms.
Additionally, contact a skilled personal injury lawyer with the experience and resources to help you file a successful lawsuit against a major pharmaceutical company like Eli Lilly and Company. Many personal injury attorneys offer a free legal consultation and can assess your allegations to establish if you can file a Mounjaro side effects lawsuit to seek financial compensation.
How to File a Mounjaro Side Effects Lawsuit
If you develop health complications after taking Mounjaro, you’re eligible to file a claim and seek compensation. Hiring an experienced product liability attorney can help you understand the legal process and ensure you receive fair compensation.
Key steps for filing a Mounjara side effects lawsuit:
- Initial legal consultation: Immediately after developing side effects from Mounjaro treatment, you should contact a skilled attorney to review your allegations and determine your eligibility to seek compensation.
- Evidence collection: Mounjaro claims often require evidence that supports the allegations. That evidence might include doctor testimonies, medical records, prescriptions, and pharmacy receipts. Evidence of your medical diagnosis, medical bills, and purchase of Mounjaro is crucial in proving your damages.
- Filing your Mounjaro lawsuit: Your lawyer will handle all paperwork related to your lawsuit and ensure you file your allegation within the state-specific statute of limitations.
- Negotiations and court hearings: Your lawyer will also work with the defense team to negotiate a fair settlement or take the lawsuit to trial if a settlement isn’t reached.
Finding Legal Representation for Your Mounjaro Claim
Finding the best Mounjaro attorney to represent your legal interests is daunting. Thousands of attorneys show up on Google search for Mounjaro side effects lawsuits. So, how do you choose the best attorney for your Mounjaro lawsuit?
Here are some essential tips when seeking legal representation:
- Proven track record of success: Has the lawyer won similar product liability cases? Does the law firm have a demonstrated track record for securing favorable verdicts and settlements against major pharmaceutical companies? Results might not be everything, but they matter. You want to hire an experienced attorney who offers free legal consultations and a transparent payment structure.
- Transparent payment structure: You stand to gain a lot by pursuing a successful Mounjaro lawsuit. That means the attorney representing you should break down their fee structure when you hire them. Often, Mounjaro attorneys work on a contingency fee basis. That means they only get paid if they successfully obtain financial compensation on your behalf. However, the attorney fees can vary from law firm to law firm. So, from the start, ensure you know the fee agreement in your Mounjaro lawsuit.
To find the best Mounjaro attorney, interview multiple lawyers. Prioritize success in similar lawsuits, experience, and transparent payment structure. At Allconsumer.com, our goal is to keep the public informed on the latest consumer issues. Sign up for our newsletter to keep up-to-date.
