4. Mirena – Birth Control Device
Developed and sold in Europe since 1991, Mirena came Stateside in 2000. It quickly became one of the two hormonal IUDs approved for use in the USA. Manufactured by Bayer Pharmaceuticals, it worked by releasing continuous doses of levonorgesterel to thicken the mucus lining of the uterus. This prevents any sperm that enters from surviving and developing into a fetus.
The warning bells start to go off when even Bayer claims that they are unsure of EXACTLY how Mirena really works. Some of its side effects include the formation of ectopic pregnancies and the spontaneous expulsion of the device from the body.
Mirena was also found to cause pelvic inflammatory disease (PID), which can cause infertility by damaging the uterus, ovaries and Fallopian tubes. This condition can occur within three weeks after insertion of the Mirena.
Bayer has also being accused of misleading marketing and not disclosing important details like the tendency of the device to move around, which led to perforation of the uterine wall in some patients.
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