The Depo Provera lawsuit is mass tort litigation against Pfizer alleging that the injectable contraceptive causes meningioma brain tumors and that the company failed to adequately warn women of this risk.
On February 7, 2025, the Judicial Panel on Multidistrict Litigation consolidated these cases into MDL No. 3140, assigned to Judge M. Casey Rodgers in the U.S. District Court for the Northern District of Florida.
What Is Depo Provera and Who Makes It?
Depo Provera birth control is an injectable contraceptive containing medroxyprogesterone acetate administered as a shot every three months.
Pfizer manufactures this medication, which the FDA approves for pregnancy prevention in females of reproductive potential.
Healthcare providers prescribe this depot medroxyprogesterone acetate injection when patients prefer not to use daily oral contraceptives, with women receiving intramuscular injections in clinical settings every 12-13 weeks.
What Are Women Alleging in These Lawsuits?
Women filing Depo Provera claims allege that Pfizer failed to warn about meningioma risks despite knowing or having reason to know about this danger.
Women filing Depo Provera claims have raised several product liability allegations against Pfizer:
- Failure to warn: Inadequate disclosure of meningioma brain tumor risk to patients and providers
- Defective design: Unreasonable risks outweighing benefits for long-term users
- Negligence: Insufficient safety testing and post-market surveillance
This is mass tort litigation, not a Depo Provera class action.
Each woman files her own individual lawsuit with unique medical history and damages.
While the transferred actions share common questions about causation and failure to warn, they maintain individual characteristics allowing for personalized compensation.
When Did Depo Provera Lawsuits Begin?
A California woman who received approximately 64 Depo Provera injections between 2005 and 2021 filed the first meningioma lawsuit related to the drug in October 2024.
The following timeline outlines how this litigation has progressed since the first lawsuit was filed:
- October 2024: First lawsuit filed linking Depo Provera to meningioma
- Late 2024: Rapid increase in case filings following publication of medical research
- February 2025: MDL No. 3140 officially established in federal court
- December 2025: Over 1,470 cases consolidated in the multidistrict litigation
The brain tumor lawsuits have gained tremendous momentum, with case filings increasing by approximately 122% between September and November 2025.
This rapid growth reflects rising public awareness of the alleged Depo Provera brain tumor connection, as more women learn that their meningioma diagnosis may be linked to their birth control injections.