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A 43-year-old member asked:

How much time will my birth control have lowered effectiveness?

1 doctor answer1 doctor weighed in
Dr. Asha Kamnani
Obstetrics and Gynecology 43 years experience
Please Clarify: Please give us more information. Birth control pills are very effective if taken accurately and precisely. Emergency birth control pills should be taken within 72 hours of unprotected sex. When taken after 72 hours they are much less effective. The sooner you take it the more effective it is. IUDs have longer effective time period. I hope I have answered your question.

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Similar questions

A 51-year-old member asked:

How much time should I wait before switching birth control?

1 doctor answer2 doctors weighed in
Dr. Peter Baumann
Specializes in Obstetrics and Gynecology
3 - 6 months: A woman should have tried a birth control method at least 3 - 6 months, before it can reasonably be assumed that that method is not working for her and she better switch. Switching does not necessarily have a higher success rate, it means to start the process over again.
A 46-year-old member asked:

How much time until birth control leaves your system?

1 doctor answer4 doctors weighed in
Dr. Peter Baumann
Specializes in Obstetrics and Gynecology
24 hours: The effect of birth control stops as early as 24 hrs, when the next pill is due. Women can plan to become pregnant the first cycle after they stopped their birth control pills.
A 41-year-old member asked:

How much time should is wait to switch birth control?

1 doctor answer1 doctor weighed in
Dr. Wayne Ingram
Specializes in Obstetrics and Gynecology
Zero time: When you get to the next period on the existing cycle then start the new contraceptive method.
A 53-year-old member asked:

How much time does birth control take effect?

1 doctor answer1 doctor weighed in
Dr. Mirela Cernaianu
Obstetrics and Gynecology 30 years experience
Pill efficacy: If you take the pill within 5 days from the 1st day of your period then the pill works immediately - if you start the pill 7-8 days into the cycle then ovulation might still occur, and a back up method should be used.

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Last updated Sep 28, 2016

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