According to a California lawsuit, Depo-Provera, a birth control injection may cause or substantially contribute to brain tumors. Kristen Schmidt has filed a lawsuit alleging that Pfizer, Viatris, Greenstone, Prasco Labs and Pharmacia and Upjohn (“Pfizer et al.”) failed to warn consumers that its Depo-Provera contraception and endometriosis medication may cause or substantially contribute to a certain type of brain tumor called intracranial meningioma.1