How Long Should You Take Emergency Contraceptive Pills? - Obstetrics and Gynecology

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Emergency contraceptive pill


Hello, how long should I stop taking the oral contraceptive pill before trying to conceive?

E, 20~29 year old female. Ask Date: 2021/08/01

Dr. Cao Guotao reply Obstetrics and Gynecology


Hello, it is generally recommended to take it for one year and then take a one-month break.
Wishing you good health!

Reply Date: 2021/08/01

More Info


Emergency contraceptive pills (ECPs) are designed to prevent pregnancy after unprotected intercourse or contraceptive failure. They are most effective when taken as soon as possible after the event, ideally within 72 hours, but some types can be effective up to 5 days later. However, the question of how long one should take ECPs is a bit different from the question of when to take them.

ECPs are not intended for regular use as a primary contraceptive method. They are a backup option and should not replace regular contraceptive methods. The most commonly used ECPs are levonorgestrel (Plan B One-Step) and ulipristal acetate (ella).
1. Duration of Use: ECPs are typically taken as a single dose or a two-dose regimen. For example, Plan B is taken as a single pill, while ella is taken as one pill. After taking ECPs, there is no need to continue taking them daily. They are meant for one-time use in response to a specific incident of unprotected intercourse.

2. When to Stop: If you have taken ECPs, you do not need to continue taking them beyond the initial dose. If you are using them as a one-time emergency measure, you should stop after taking the prescribed dose. If you find yourself needing ECPs frequently, it may be a sign that your regular contraceptive method is not effective or that you need to consider a more reliable form of birth control.

3. Follow-Up: After taking ECPs, it is advisable to monitor your menstrual cycle. You may experience some changes in your cycle, such as an earlier or later period. If your period is more than a week late after taking ECPs, it is recommended to take a pregnancy test and consult a healthcare provider.

4. Consultation with Healthcare Providers: If you have concerns about your contraceptive methods or if you find yourself needing ECPs frequently, it is essential to consult with a healthcare provider. They can help you explore more effective and regular contraceptive options that suit your lifestyle and health needs.

5. Potential Side Effects: ECPs can cause side effects such as nausea, fatigue, headache, dizziness, breast tenderness, and changes in your menstrual cycle. These side effects are generally mild and temporary. If you experience severe side effects or have concerns, it is important to seek medical advice.

In summary, emergency contraceptive pills should be taken as needed after unprotected intercourse, and there is no need to continue taking them beyond the initial dose. If you find yourself needing them frequently, it may be time to discuss more reliable contraceptive options with your healthcare provider. Always remember that while ECPs are a valuable option for preventing unintended pregnancy, they are not a substitute for regular contraceptive methods.

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Hello, the chances are slim, so you may need to wait. It is generally recommended to take action within 48 hours. It's best to use contraception beforehand. If your period is more than a week late, it is advisable to see a gynecologist. Wishing you good health.

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