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How Effective Is Plan B Emergency Contraceptive In Preventing Pregnancy?
Question: I took plan B but 18 hours later had unprotected sex again. I spoke to a nurse who told me the plan B should work. How accurate is this? Also, what if I was ovulating during this time?
Brief Answer:
In your case its expected to be 90-95% effective
Detailed Answer:
Hello,
Thanks for writing to Health Care magic, I am Dr , Muhammad Ahmad , I have read your question closely, I understand your concern and will be helping you with your health related problem.
Plan B One-Step may reduce the risk of pregnancy by 95% when taken within the first 24 hours after unprotected intercourse and by 61% when taken between 48-72 hours
Even if you are ovulating at the time of sexual activity and you took it within 24 hours it will be effective by 95%, still it is not perfect , there is a margin of unlucky 5% but usually it Plan B makes one safe quite conveniently and rarely this method of contraception fails
I hope this answered your question, If you have more queries I am happy to answer you.
Regards.
Dr.Muhammad Ahmad
In your case its expected to be 90-95% effective
Detailed Answer:
Hello,
Thanks for writing to Health Care magic, I am Dr , Muhammad Ahmad , I have read your question closely, I understand your concern and will be helping you with your health related problem.
Plan B One-Step may reduce the risk of pregnancy by 95% when taken within the first 24 hours after unprotected intercourse and by 61% when taken between 48-72 hours
Even if you are ovulating at the time of sexual activity and you took it within 24 hours it will be effective by 95%, still it is not perfect , there is a margin of unlucky 5% but usually it Plan B makes one safe quite conveniently and rarely this method of contraception fails
I hope this answered your question, If you have more queries I am happy to answer you.
Regards.
Dr.Muhammad Ahmad
Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar
But i had unprotected sex twice. I took plan B within 24 hours the first time but then had unprotected sex again 18 hours and did NOT take plan B again. Nurse said it would still work. Would you agree?
Brief Answer:
Yes it would still work well.
Detailed Answer:
Hello ,
Thanks for writing back yes indeed I would agree it stays working for 72-100 hours sometimes so it gives protection for 2-3 days though efficacy keeps decreasing with time.. 18 hours is no time it will have a high efficacy in this time period.
Regards.
Dr.Ahmad
Yes it would still work well.
Detailed Answer:
Hello ,
Thanks for writing back yes indeed I would agree it stays working for 72-100 hours sometimes so it gives protection for 2-3 days though efficacy keeps decreasing with time.. 18 hours is no time it will have a high efficacy in this time period.
Regards.
Dr.Ahmad
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Above answer was peer-reviewed by :
Dr. Chakravarthy Mazumdar
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