Which type of contraceptive is designed for long-term use and is placed within the uterus?

The intrauterine device (IUD) is specifically designed for long-term use as a contraceptive option. It is a small device that is inserted into the uterus by a healthcare provider, and it can remain effective for several years, depending on the type of IUD used. IUDs work primarily by preventing fertilization of an egg or, in some cases, preventing implantation of a fertilized egg.

The long-term efficacy and convenience of the IUD make it a popular choice for those seeking to prevent pregnancy without the need for daily or monthly actions, allowing individuals to have a reliable form of contraception with minimal ongoing maintenance.

In contrast, other contraceptive options such as implants, contraceptive pills, and condoms function differently. Implants are also long-term but are subdermal and not placed in the uterus. Contraceptive pills require daily intake to be effective, and condoms are barrier methods that need to be used during each sexual encounter, making them less suitable for long-term, continuous use without the need for reapplication.