Hi there, that is a great question: an IUD ( intra-uterine device) offers the benefit of long-lasting protection and being free of synthetic estrogens. Depending on the type of IUD, it only has to be replaced between 2 and 5 years. There are no interactions with antibiotics, few systemic effects and they are reliable. As far as reliability goes, the IUD is more effective than the Pill at 99%, however it should be checked after placement to ensure that it does not fall out unnoticed.
