Choosing the right emergency contraception depends on various factors, including the type of emergency contraception available, how soon after unprotected sex it can be taken, and individual medical history and preferences.

There are three types of emergency contraception available: levonorgestrel pills, ulipristal acetate pills, and the copper intrauterine device (IUD).

• Levonorgestrel pills are the most commonly used emergency contraception and are available over-the-counter without a prescription in many countries. They are effective up to 72 hours after unprotected sex and are generally well-tolerated. Levonorgestrel pills may not be as effective for women who are overweight or obese.
• Ulipristal acetate pills are a newer form of emergency contraception that are available by prescription only. They are effective up to 120 hours after unprotected sex and may be more effective than levonorgestrel pills, particularly for women who are overweight or obese. Ulipristal acetate pills may not be appropriate for women with liver disease or severe asthma.
• The copper IUD is the most effective form of emergency contraception and can be inserted up to five days after unprotected sex. It can also be used as long-term contraception if desired. However, it requires a healthcare provider to insert it and may not be suitable for women who cannot use a copper IUD for regular contraception.

Ultimately, the choice of emergency contraception should be discussed with a healthcare provider, who can recommend the most appropriate option based on individual circumstances and medical history.