why the ocp cant be used as an after pill - USMLE Forums
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Old 06-09-2011
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Drug why the ocp cant be used as an after pill

a silly question..maybe ..but i cant understand..if the pt is not no ocp and has had unprotected sex ..then why cant we prescibe the regular pill as an after pill n prevent pregnancy...or can we????
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Old 06-09-2011
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Correct Answer

We prescribe 2 "morning after pills" which are levonorgestrel pills, not the regular combination OCPS.
1st pill is taken within 72hrs of intercourse.
2nd pill 12hrs after the 1st one.
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Old 06-11-2011
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Question why cant we prescribe the regular pill as an after sex pill

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Originally Posted by mle guy View Post
We prescribe 2 "morning after pills" which are levonorgestrel pills, not the regular combination OCPS.
1st pill is taken within 72hrs of intercourse.
2nd pill 12hrs after the 1st one.
thnks for the reply.still am confused.why cant i give the pt the regular pill and ask her to take it like the after pill..why does she need to go out n but the after pill seperately ??
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Old 06-11-2011
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The after pill has a higher dose of progesterone
If i remember what i was taught during my college days, OCPs can be given, but the dose needed is higher.. I think its was 2-3pills..
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Old 06-11-2011
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Samstar, you are right. OCPs can be used as MAPs.

First let me review the hypothesized mechanisms of both daily contraceptive pills and post-coital hormonal contraception.

Proposed mechanisms of OCPs:
• estrogen-induced inhibition of the midcycle surge of gonadotropin secretion, so that ovulation does not occur (only in combination pills)
• Alteration of the endometrium, rendering it less suitable for implantation
• Alterations in cervical mucus, which becomes less permeable to penetration by sperm
• Impairment of normal tubal motility and peristalsis

The exact mechanism of the MAP is not entirely clear, but current hypotheses include the following:
• Inhibition or delay of ovulation
• Interference with fertilization or tubal transport
• Prevention of implantation by altering endometrial receptivity
• Causing regression of the corpus luteum

Levonorgestrel-only medications that have been specifically developed as “MAPs” include:
• Plan B One-Step™, a single dose emergency contraceptive containing 1.5 mg in a single tablet
• Next Choice™ pill packs that contain two 0.75 mg tablets to be taken 12 hours apart.
• Levonelle™ 1500 (available in the UK), which consists of one 1.5 mg tablet

Combined OCPs normally given for cyclic use can be used as MAPs. Two 2-6 pill doses are given 12 hours apart. For specific dosing of various OCP see http://ec.princeton.edu/questions/dose.html

Copper intrauterine contraception can also be used for emergency contraception. Advantages of this method are that it provides continuing contraception after the initial event and it is more effective than oral regimens.

Source: UpToDate
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Wow! Way to go healer2b
So regular OCPs CAN be used as morning after pills, but just in an increased dose (4-6 pills in 2 doses 12 hours apart)
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Old 06-11-2011
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Default yes u can use

in my view ocps , or plan b doesnt matter. But what matters is high content of progesterone which only makes the condition unfavorable for sperm accommodation by making think mucous, so that the sprem can no longer travel to reach the ovum. May be.....
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