NAPLEX 2025 – 400 Free Practice Questions to Pass the Exam

The most effective form of emergency contraception is the Copper IUD, which can be used within 5 days of unprotected sex. While Levonorgestrel and Ulipristal can also be effective within the given time frame, the Copper IUD has a higher success rate. Plan B, while effective, should be used within 3 days of unprotected sex, making it less timely and potentially less effective than the Copper IUD. By providing a copper barrier, the Copper IUD can prevent fertilization and implantation, making it the most effective emergency contraception option.