Missed Birth Control Pills: What to Do and How It Affects Efficacy - Obstetrics and Gynecology

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Missed oral contraceptive pill?


Hello, doctor.
I started taking my first pack of oral contraceptives this month and I'm currently in the third week.
I usually take the medication between midnight and 1 AM before going to sleep.
However, I forgot to take it on May 31st and remembered at 10 AM, so I took it then.
On June 1st, I forgot to take it before bed again and remembered in the morning, so I took it.
Can I resume taking it at night, or should I start taking it in the morning at 10 AM? Will this cause an imbalance in the medication levels, and do I need to take an extra pill?

Ms. Wu, 10~19 year old female. Ask Date: 2021/06/01

Dr. Zhang Kunmin reply Obstetrics and Gynecology


Hello, the number of pills in each type of combination oral contraceptive varies, and it is important to take the pills as directed.
If you forget to take a pill, you should take it as soon as you remember, and continue taking the next pill at the usual time.
If you miss a dose of an active pill for more than 12 hours, in addition to taking the missed pill, it is advisable to use an additional barrier method of contraception for the next seven days.
If you miss a dose for more than 24 hours, you should stop taking the current contraceptive for seven days (including the days you missed) and then continue with the next cycle.
Regarding your situation, you can continue to take the pills regularly before bedtime.
Thank you! Wishing you peace and health.
Dr.
Zhang

Reply Date: 2021/06/01

More Info


When it comes to missed birth control pills, it's important to understand how this can affect the efficacy of the contraceptive method you are using. Birth control pills, particularly combination oral contraceptives (COCs), are designed to be taken at the same time every day to maintain consistent hormone levels in your body. This consistency is crucial for preventing ovulation and ensuring that the pills are effective in preventing pregnancy.

In your case, you mentioned that you typically take your pills between midnight and 1 AM but missed a dose on May 31. You remembered to take it the next morning at 10 AM, which is within the 12-hour window for most COCs. Generally, if you remember to take a missed pill within 12 hours of your usual time, you should take it as soon as you remember and then continue taking your pills at your regular time. This means that you can continue taking your pills at your usual midnight to 1 AM schedule moving forward.

However, if you miss a pill and it has been more than 12 hours since your usual time, the effectiveness of the pill may be compromised. In such cases, the recommendation is to take the missed pill as soon as you remember, and then continue with your regular schedule. If you miss more than one pill, especially in the first week of a new pack, you may need to use a backup contraceptive method, such as condoms, for at least seven days to ensure you are protected against pregnancy.

Regarding your second missed pill on June 1, since you took it the following morning, you should also take that missed pill as soon as you remember and continue with your regular schedule. It is not necessary to take an extra pill to compensate for the missed doses unless specifically instructed by your healthcare provider. Taking more than the prescribed amount can lead to side effects and hormonal imbalances.

It's also important to note that if you experience any unexpected bleeding or if your menstrual cycle becomes irregular after missing pills, it may be a sign that your body is adjusting to the missed doses. If you have concerns about your menstrual cycle or the effectiveness of your birth control, it is advisable to consult with your healthcare provider for personalized advice.

In summary, if you miss a birth control pill, take it as soon as you remember, and continue with your regular schedule. If you miss more than one pill or if you are unsure about your contraceptive protection, consider using a backup method and consult your healthcare provider for guidance. Maintaining open communication with your doctor about any concerns or irregularities in your menstrual cycle is essential for your reproductive health.

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