Depo-Provera Lawsuit

Have You Been Diagnosed With a Brain Tumor After Using Depo-Provera?

If you’ve received a meningioma or brain tumor diagnosis after using Depo-Provera, you’re not alone-and you may have legal options. Many women are now stepping forward, filing a Depo-Provera lawsuit to hold Pfizer accountable for failing to warn users about the serious risks associated with this contraceptive injection.

Depo-Provera, a widely used birth control shot, contains the synthetic hormone medroxyprogesterone acetate. Recent studies have connected long-term use of this hormone with a significantly increased risk of brain tumors, especially meningiomas, which form in the protective layers around the brain and spinal cord. And yet, for years, these risks were kept out of sight-buried in regulatory debates and missing from warning labels in the U.S.

If you’ve been affected, understanding your rights and how this drug may have contributed to your illness is the first step toward justice. This page explores the biological science behind the risks, the legal movement underway, and how to determine whether you qualify to file a claim.

Scientific Evidence Linking Depo-Provera to Brain Tumors

The foundation for most Depo-Provera brain tumor risk claims stems from recent studies showing that long-term exposure to medroxyprogesterone acetate-the drug’s active ingredient-can increase the risk of developing intracranial meningiomas. These tumors, though often benign, can cause devastating symptoms by compressing critical brain structures.

One landmark study published in the British Medical Journal in 2024 reported a 5.6-fold increase in risk for women who used Depo-Provera for over one year. Another analysis of 117,000 cases found a 53% higher likelihood of developing meningiomas with exposure to this hormone. These are not minor findings-they are the kind of statistics that demand answers.

Researchers have found a dose-dependent relationship, meaning the longer and more frequently a woman used Depo-Provera, the higher the risk became. This directly challenges the historical safety messaging from Pfizer and raises serious concerns about their duty to inform patients and doctors alike.

How Synthetic Hormones Like Medroxyprogesterone Affect Brain Tissue

The biology behind this link is complex but well-supported. Medroxyprogesterone acetate mimics the natural hormone progesterone, binding to receptors throughout the body-including in the brain. When this synthetic hormone is introduced over long periods, it can alter the normal growth cycle of certain brain cells, particularly those in the meninges.

Hormonal effects on cell proliferation play a key role in tumor development. Progesterone receptors are frequently found in meningiomas, and overstimulation of these receptors may encourage abnormal growth. This hormonal imbalance may also impair the brain’s natural checks against tumor development, tipping the scales toward cell overgrowth and, ultimately, tumor formation.

Progestins like medroxyprogesterone acetate are uniquely potent and long-lasting, especially when injected. This makes Depo-Provera different from short-acting hormonal contraceptives and may explain why its tumor risks are more pronounced.

What Are the Signs of a Depo-Provera-Linked Brain Tumor?

Meningiomas can take years to develop, and their symptoms often appear gradually-making the connection to a contraceptive used long ago hard to recognize. If you’ve used Depo-Provera and are experiencing unusual symptoms, these could be warning signs:

• Persistent or severe headaches
• Visual disturbances or vision loss
• Hearing problems or ringing in the ears
• Changes in memory, behavior, or personality
• Loss of coordination, dizziness, or balance issues
• Seizures or fainting episodes

If you’ve already been diagnosed with a meningioma or another intracranial tumor, and you used Depo-Provera regularly for at least a year, you may have grounds for a medroxyprogesterone meningioma lawsuit.

Pfizer Knew or Should Have Known-And the Lawsuits Are Growing

Lawsuits across the country allege that Pfizer and related companies failed to warn users about the known risks of progestin-induced brain tumors. In Europe, product labels for similar medications already include meningioma warnings. But in the U.S., this information was largely absent until recently.

In early 2025, more than 20 lawsuits were consolidated into multidistrict litigation (MDL) in the Northern District of Florida. Plaintiffs include women who were diagnosed with multiple tumors, underwent brain surgery, or now live with permanent neurological damage. The litigation continues to grow as more women come forward.

The lawsuits point to Pfizer’s long-standing knowledge of hormonal tumor risks-dating back decades to early progestogen studies-and allege that the company placed profits over safety by choosing not to update U.S. warning labels.

Am I Eligible to File a Depo-Provera Lawsuit?

You may be eligible to join the Depo-Provera side effects litigation if you meet the following conditions:

• Received at least four consecutive injections of Depo-Provera, Depo-SubQ Provera, or its authorized generics
• Were diagnosed with a brain tumor-particularly meningioma-after beginning treatment
• Have supporting medical records or imaging confirming your diagnosis

Even if you’re unsure whether your tumor is related to the injection, it’s worth speaking to our lawyers. We can help investigate the timing, exposure, and medical findings to determine your eligibility.

Types of Compensation You May Be Able to Recover

Women harmed by Depo-Provera may be able to pursue compensation for a wide range of losses, including:

• Medical bills related to tumor diagnosis, surgery, and follow-up care
• Lost income from time off work or disability
• Permanent neurological injuries and long-term cognitive decline
• Pain and suffering, emotional distress, and reduced quality of life

In especially severe cases, families may also pursue wrongful death claims if a loved one passed away due to a brain tumor linked to Depo-Provera use.

What to Expect From Our Legal Team

These cases involve more than just proving a medical injury-they involve confronting one of the largest pharmaceutical companies in the world. That’s why our firm is committed to building every claim with the depth and care it deserves.

Our attorneys can help you:

• Collect your medical records and identify key documentation
• Connect with qualified experts to support your claim
• File your claim within the legal time limits in your state
• Negotiate a fair settlement or take the case to trial if needed

We don’t just handle your case-we support you through a difficult chapter, and we’re here to help you make informed decisions about your future.

If You’ve Been Affected by Depo-Provera, We’re Here to Help

No one should have to face a life-changing brain tumor diagnosis without support-and no one should be left in the dark about the risks of a drug they trusted. If you believe Depo-Provera contributed to your condition, you deserve answers and a legal team willing to fight for accountability.

Our lawyers are currently accepting clients who used Depo-Provera and were later diagnosed with a brain tumor such as meningioma. We’re ready to investigate your case and help you take the next step.

Contact our team at Alonso Krangle, LLP today. Call 800-403-6191 or reach us through our secure online form on this page. Your consultation is free, and you won’t pay anything unless we win your case.