IUD Stands For Intrauterine Device.

It Is A T-Shaped Device That Is Inserted Into The Uterus.



1.) The Hormonal IUD contains hormones similar to the pill. It works in three ways:

  1. Preventing implantation of a fertilized egg in the uterus.
  2. Killing sperm before fertilization.
  3. Increasing cervical mucus to prevent sperm from reaching the egg.

2.) The Copper IUD works because the copper is toxic to sperm.

  1. It is also designed to work by preventing implantation1 [of a fertilized egg in the uterus].

If a person does experience implantation of a child in the womb, the IUD should be removed because it can cause a miscarriage or pre-term birth.

Note: Information on this website is intended to supplement, not substitute for the knowledge of your doctor, or other health care provider. 

Sources: 1 Physician’s Desk Reference (page 2409 of this year’s updated book)

Two of the IUD’s that work in this manner are Mirena™ and Skyla™.