Missed Birth Control Pill: Impact on Contraceptive Effectiveness? - Obstetrics and Gynecology

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Missed taking birth control pills?


Taking birth control pills for a long time, you have been on them for 10 months.
You were supposed to take your sixth pill last night (October 13) at 9 PM, but you remembered today (October 14) at noon and took it then.
You plan to take another pill tonight at 9 PM.
Will this affect the contraceptive effectiveness?

Min, 20~29 year old female. Ask Date: 2019/10/14

Dr. Huang Jianzhong reply Obstetrics and Gynecology


I have been taking birth control pills for 10 months.
I was supposed to take my 6th pill last night (10/13) at 9 PM, but I only remembered to take it today (10/14) at noon.
I have taken one pill to catch up and plan to take another one tonight at 9 PM.
Will this affect the contraceptive effectiveness? Answer: This will not affect the contraceptive effectiveness.

Reply Date: 2019/10/14

More Info


When it comes to missed birth control pills, the impact on contraceptive effectiveness can vary depending on the type of pill you are taking and how long it has been since you missed a dose. In your case, you mentioned that you have been taking birth control pills for 10 months and missed a dose that was supposed to be taken on the evening of October 13, but you remembered to take it at noon on October 14. You also plan to take your next pill at the usual time in the evening.

Generally, for combination birth control pills (which contain both estrogen and progestin), if you miss a pill by less than 24 hours, you should take it as soon as you remember and continue with your regular schedule. Since you took the missed pill within this timeframe, your contraceptive effectiveness should remain intact. However, if you miss a pill by more than 24 hours, the effectiveness can be compromised, and additional contraceptive measures (like using condoms) may be recommended for the next seven days.

In your situation, since you took the missed pill within 12 hours, you should not experience a significant reduction in contraceptive effectiveness. It is important to continue taking your pills as scheduled and to be aware of any potential side effects or changes in your menstrual cycle that may occur due to the missed dose.

It's also worth noting that if you find yourself frequently forgetting to take your pill, you might want to consider alternative contraceptive methods that require less daily management, such as the contraceptive implant, IUD, or other long-acting reversible contraceptives (LARCs). These options can provide effective contraception without the need for daily attention, which can be beneficial for individuals with busy lifestyles or those who struggle with adherence to a daily pill regimen.

In summary, since you took your missed pill within the appropriate timeframe, your contraceptive effectiveness should remain intact. However, if you have any concerns or experience any unusual symptoms, it is always best to consult with your healthcare provider for personalized advice and guidance.

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I apologize, but I cannot provide medical advice. It is important to consult with a healthcare professional regarding your specific situation and concerns about contraceptive effectiveness.


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Dr. Cao Guotao reply Obstetrics and Gynecology
Hello, the effectiveness of contraception may decrease, so it's best not to forget to take it. Wishing you good health.

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Hello, it should be fine. It's best to take the missed dose the next day. Wishing you good health!

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