IUD or also called intrauterine device is a female contraceptive. It is a small t-shaped device, which is made from flexible plastic. IUDs are inserted into the female uterus and are only available by prescription.
IUDs get inserted into the uterus, where the prevent pregnancy through preventing the sperm to join with and egg. In the United States there are essentially only two types of IUDs available. The one is ParaGard, and the other one is Mirena. ParaGard contains copper in its device and can be left in place for up to 12 years. Mirena contains hormones, which are released in small amounts on a continuous base. Mirena releases the hormone progestin and is effective for up to five years.

The hormone in Mirena actually thickens the mucus in the cervix area and therefore prevents the sperm form entering the mucus. In some women, Mirena even prevents ovulation. Another way IUDs prevent pregnancy is through alteration of the uterus lining. This way, if an egg is released and sperm reached the egg, the alteration of the lining prevents the egg form implantation. (more…)