How Does the Contraceptive Coil Work?
Pregnancy Prevention The contraceptive coil is a T-shaped device inserted inside a woman’s uterus to prevent pregnancy. Progesterone is the hormone that prevents the uterine lining from thickening. The contraceptive coil releases a synthetic version of progesterone, called levonorgestrel, to prevent pregnancy. The contraceptive coil is placed seven days after the first day of a menstrual cycle and is effective immediately. However, the coil can cause irregular bleeding, nausea and backaches for the first few months. Effectiveness In a 2004 study done by the National Institutes of Health, the effects of using the Mirena brand contraceptive coil were studied in 75 women in the UK. Researchers state that the Mirena coil is a highly effective form of contraception and helps reduce heavy menstrual bleeding. Risks and Complications Levonorgestrel is also used in emergency contraceptive pills. Both the contraceptive coil and emergency contraceptive pills are available only by prescription fro
