Emergency Contraceptive Pills: Usage and Effectiveness

Emergency contraceptive pill

Hello, doctor.
A few days ago, I visited a gynecologist for menstrual regulation, and the doctor prescribed me Wenburen 28.
My first day of menstruation was on January 1st, and it has already been over five days.
The doctor advised me to start taking the first pill on the 15th and continue until the end of the month, with my period expected to arrive around the end of the month or the beginning of the next month.
Then, I should continue taking the medication normally on the fifth day.
Is this the correct way to take it? When will the contraceptive effect be effective?

Rl, 20~29 year old female. Ask Date: 2020/01/15

Dr. Cao Guotao reply Obstetrics and Gynecology

Hello, contraceptive pills are generally started on the fifth day of the menstrual cycle.
If taken consistently, they are effective for contraception.
Wishing you good health.

Reply Date: 2020/01/15

More Info

Emergency contraceptive pills (ECPs) are a crucial option for preventing unintended pregnancies after unprotected intercourse or contraceptive failure. Understanding their usage and effectiveness is essential for anyone considering this option.

ECPs, commonly referred to as "morning-after pills," are designed to be taken after unprotected sex. They work primarily by delaying ovulation, which prevents fertilization from occurring. There are two main types of ECPs: those containing levonorgestrel (Plan B One-Step and others) and those containing ulipristal acetate (ella). The effectiveness of these pills is highest when taken as soon as possible after unprotected intercourse, ideally within 72 hours for levonorgestrel and up to 120 hours for ulipristal acetate.

In your case, it seems you are asking about a medication called "温不妊28," which is not a standard name for ECPs but appears to be a form of hormonal contraceptive. If this medication is indeed a combined oral contraceptive pill (OCP), it is typically used for regular contraception rather than emergency contraception.
When starting a new hormonal contraceptive, such as an OCP, it is crucial to follow the instructions provided by your healthcare provider. Generally, if you start taking the pill on the first day of your period, you are protected from pregnancy immediately. However, if you start taking it at a different time in your cycle, it may take a week or more for the contraceptive effects to kick in, depending on the specific formulation and your menstrual cycle.

Regarding your specific question about the timing of taking the medication, if your doctor instructed you to start on the 15th day of your cycle, you should follow that guidance. However, if you have had unprotected intercourse before starting the medication, it is advisable to use a backup method of contraception, such as condoms, for at least the first seven days of taking the pill to ensure maximum protection.

It is also important to note that ECPs are not intended for regular use as a primary contraceptive method. They are designed for occasional use and should not replace regular contraceptive methods. If you find yourself needing ECPs frequently, it may be beneficial to discuss long-term contraceptive options with your healthcare provider.

In summary, if you are taking "温不妊28" as directed by your doctor, you should be on track for effective contraception. However, if you have concerns about your contraceptive method or its effectiveness, especially in relation to recent unprotected intercourse, it is best to consult your healthcare provider for personalized advice and clarification. They can provide you with the most accurate information based on your specific health needs and circumstances.

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