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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Will The First Round Of ECP Dosage Still Effective If You Had Sex Unprotected 1-2 Hours After Taking The ECP S Second Dosage?

We had sex at about 11 pm January 23. On the 24th at 2:30 PM we took 4 pills of Nordette as ECP. Then we had another 4 at 2;30 AM of the 25th, exactly 12 hours. However, at about 3:40 AM, she vomited but not so much just a little like it can fit only in a small glass. At 4AM , we had sex but a very short one. We slept and at about 11 AM i had her take another 4 pills, and i am planning to have her take again another 4 for the 2nd intercourse we had. My questions are: Am i right if she goes 2nd round with the ECP? Given the 1st dosage proximity? Was the vomit a reason for the ECP to be ineffective though it was just a small amout of vomit? Will the first round of ECP dosage still effective if you had sex unprotected 1-2 hours after taking the ECP s second dosage?
posted on Tue, 28 Jan 2014
Twitter Fri, 7 Feb 2014 Answered on
Twitter Fri, 7 Feb 2014 Last reviewed on
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OBGYN,  's  Response
Hi,
Thanks for the query.
It is difficult to be sure if the dose is effective as she has vomited.
Also emergency contraceptives are meant to be used only in case of accidental emergency intercourse and not every day. So it is not advisable to take so many pills in such a short interval. In addition to nausea and vomiting, they have other adverse effects which could be serious at times.

There is no literature as to repeated use of pills at such short intervals. Theoretically the pill will be effective as it will not allow sperms to go up into the uterus and prevent fertilization so the chances of pregnancy are low but not zero as sperm remain alive for upto even 36 hours.

I suggest that you either use condoms or any other method like pills, patches or hormonal injections to prevent pregnancy if the frequency of sexual contact is more than occasional.

Hope I was able to help you. Thanks for using Health Care Magic.
Have a nice day.
Dr. Madhuri Bagde
Consultant Obstetrician and Gynecologist




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Will The First Round Of ECP Dosage Still Effective If You Had Sex Unprotected 1-2 Hours After Taking The ECP S Second Dosage?

Hi, Thanks for the query. It is difficult to be sure if the dose is effective as she has vomited. Also emergency contraceptives are meant to be used only in case of accidental emergency intercourse and not every day. So it is not advisable to take so many pills in such a short interval. In addition to nausea and vomiting, they have other adverse effects which could be serious at times. There is no literature as to repeated use of pills at such short intervals. Theoretically the pill will be effective as it will not allow sperms to go up into the uterus and prevent fertilization so the chances of pregnancy are low but not zero as sperm remain alive for upto even 36 hours. I suggest that you either use condoms or any other method like pills, patches or hormonal injections to prevent pregnancy if the frequency of sexual contact is more than occasional. Hope I was able to help you. Thanks for using Health Care Magic. Have a nice day. Dr. Madhuri Bagde Consultant Obstetrician and Gynecologist