Copper IUD for EC
Second-line method
Estimated failure rate 0.1% (based on 8,400
postcoital insertions)
Mechanism(s) of action
Impairs fertilization
Alters sperm motility and integrity
Impairs implantation
Trussell J, et al.  Fertil Control Rev. 1995;4(2):8-11.
LaValleur J.  Obstet Gynecol Clin North Am.  2000;27(4): 817-839.