The IUD is a form on inserted or planted contraception that continuously releases progestin that prevents pregnancy. It has a 99% perfect use rate. The pros of using the iud are the most long lasting and effective form of birth control and low doses of hormones so there are fewer side effects. The cons of the iud are, it is a painful and invasive operation, initial menstrual cycles may be heavier, longer and more cramping.
IUDs. Works by stopping sperm from reaching the egg. Perfect use: Inserted into woman by doctor. Typical use: the same as perfect. Advantages: Insert and forget, least expensive BC for woman, last a long time 5-7years. Disadvantages: needs a doctor to place it, could slip out of place, cause infection. Prescription required.