More than 10 in every 100 women are likely to experience changes to their periods following placement of the intrauterine system.
The intrauterine system can affect your periods in different ways. You may experience spotting (a small amount of blood loss), and the length of your periods and amount of bleeding may differ1. Overall, there will be a reduction in the number of bleeding days and in the amount of blood lost each month. Some women eventually find that their periods stop altogether1. When the intrauterine system is removed, periods return to normal.
Heavy menstrual bleeding (heavy periods)
Heavy periods can be a serious enough issue to consider having gynecological surgery that could be a hysterectomy (womb removal) or a surgical procedure on the lining of the womb (the endometrium) if drug treatment does not work. However, one form of long-acting reversible contraceptive (LARC) (the intrauterine system) is recommended as a treatment for women with heavy periods as it is has been medically proven to significantly reduce bleeding in addition to providing effective contraceptive protection2.
There is a significant reduction in menstrual blood loss (79% – 98%) after 3 to 6 months of treatment, though there may be an increase in the number of bleeding or spotting days during the first couple of months3,4,5,6,7,8,9.
If a significant reduction in blood loss does not occur after 3 to 6 months, alternative treatments for heavy menstrual bleeding (pharmaceutical or surgical) should be considered.
Note: The intrauterine system (IUS) is also known as the hormonal coil.